RE: [RCSE] Battery food-Charger
Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. That explains why the packs got hot. The above applies to NiMH cells used for normal(?) operation, as opposed to propulsion applications (F5B, etc). So, is there a truly automatic charger for Efficient NiMH cells? Regis -Original Message- From: Simon Van Leeuwen [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 09, 2004 5:30 PM To: Cameron Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Since the A4 was released, the charge protocol for NiMH has changed significantly to better represent the characteristics of the cell chemistry. If memory serves (I owned one, then ditched it) only the peak overvoltage was dropped by a few mV as compared to the NiCD algorythm. The current accepted regime for NiMH is similar to: Stage 1: Charger algorythm applies a zero (slope) delta, essentially turns off the charge phase as soon as the fully charged state is reached (based on a V value, no overcharge above rated V). This brings the cell to ~80-90% of rated capacity (this value will decrease the more current pushed into the cell, as the rated V is reached sooner with an elevated charge V) Stage 2: Same charge current (or another lesser rate) is pulsed (duty cycle) to bring the cell 95% of rated Stage 3: Maintenance rate - same charge current (or another lesser value) is pulsed (shorter duty cycle) to maintain a fully charged state. The above applies to NiMH cells used for normal(?) operation, as opposed to propulsion applications (F5B, etc). Quoting Cameron [EMAIL PROTECTED]: To quote Litco Systems directly from their manual for the Alpha 4 charger: PLEASE NOTE: ALL DEVICES ON A-4 EXCEPT W DEVICE ARE INTENDED FOR NI-CADS. ONLY V AND W DEVICES MAY BE USED WITH WET AND GEL CELLS (LEAD-ACID BATTERIES). ALL DEVICES EXCEPT A,S W ARE SUITABLE FOR NIMH BATTERIES (NICKEL-METAL-HYDRIDE). TO BE ON THE SAFE SIDE USE ONLY I AND C CHARGER WITH NIMH CELLS. :-) *smile* Cameron -Original Message- Date: Tue, 9 Nov 2004 11:43:28 -0800 From: Simon Van Leeuwen [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] com [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Message-ID: [EMAIL PROTECTED] That's the probelm with employing a NiCD charger that peak-detects for NiCD instead of NiMH. NiMH are endomthermic, while NiCD technology is exothermic. This means as an NiCD becomes fully charged, the increase in heat causes an increase in internal resistance, which lowers the charge V, which trips the peak-detect circuitry. Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. NiCD chargers are great at ruining perfectly good NiMH cells. Then the cells get blamed for poor performance... RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
RE: [RCSE] Battery food-Charger
I also owned an Alpha 4. Not rated for NIMH, and would routinely undercharge packs when I used 3 or 4 ports at a time. Not good. The Sommer 'Miniron Mobil' charger. 5 ports, rated for all chemistries (nicad/nimh/lead-acid/lithium). It charges, discharges, cycles. Max charge rate is 2A, minimum is 10 mAh. No waiting-list, either. -==- Barrett -Original Message- From: perrypeckham [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 09, 2004 11:49 AM To: [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Are there automatic / peak detection chargers that will ramp down enough to put a small enough charge (C/10 or so) on the tiny 200 mAh NiMH (yep, quad A) batteries I'm using in HLG? All the ones I've found so far run at 100 mah / C/2 for these little buggers. Even wall warts at 50 mah are still running charges of C/4, not ideal. Thanks, Perry RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
On 11/10/04 5:46 Barrett Stridiron wrote: I also owned an Alpha 4. Not rated for NIMH, and would routinely undercharge packs when I used 3 or 4 ports at a time. Not good. How odd. I have owned three of them. They all worked just fine with NiMH packs for me. Full charge every time, even when using all the ports. I used mostly Device #1 (I). I still use mine for forming charges on new packs. The Sommer 'Miniron Mobil' charger. This would be the charger that Red ripped a new one in RC Reports?? ~~~ Bill Malvey RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
RE: [RCSE] Battery food-Charger
I used mine as an overnight charger. With all 4 ports in use the dam thing was only capable of putting out 250 mAh per port... Fine for small packs, but all but useless for some of the 1600-4000 mAh packs I use. Mine was also prone to false-peaking large capacity batteries. Had a couple of occasions where I took packs it considered fully-charged right off the A4 then discharged them at low rate on me Supertest - which reported 1/2-1/3 full capacity. Took the same pack and charged it with one of my Sirius chargers, then discharged. Hey-presto full capacity. I basically got to a point where I no longer trusted the thing. It worked for well for small(er) nicad packs, but just didn't suit my needs. I sold it to a fellow on RCU - he's been very happy with it. Horses for courses. Has the Miniron been getting bad reviews? I've been thinking of getting one, but haven't seen much about it besides the importer's writeup. Perhaps I should just add another Sirius to the stable. -==- Barrett -Original Message- From: Bill Malvey [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 10, 2004 11:04 AM To: [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger On 11/10/04 5:46 Barrett Stridiron wrote: I also owned an Alpha 4. Not rated for NIMH, and would routinely undercharge packs when I used 3 or 4 ports at a time. Not good. How odd. I have owned three of them. They all worked just fine with NiMH packs for me. Full charge every time, even when using all the ports. I used mostly Device #1 (I). I still use mine for forming charges on new packs. The Sommer 'Miniron Mobil' charger. This would be the charger that Red ripped a new one in RC Reports?? ~~~ Bill Malvey RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
Forgive my bluntness, I've got to chime in here. We've been blessed recently with a cornucopia of charging choices. Nearly all are do the job just fine subject to their intended applications. Yet, for many the usage of them takes on a nearly mystical air. Why? Check a charger's capabilities and use it as it's intended. What's the big deal? The only problems I've seen from my chargers have been my own fault. Bill Swingle RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
RE: [RCSE] Battery food-Charger (Now: Chargers for *all* types or batteries)
As far as chargers are concerned, for *all* types of rechargeable batteries, I like the Schulze chargers (isl 6-330d, isl 6-430d, isl 6-530d, isl 6-636+, and isl 8-936g). I would love the isl 8-936g, but definitely cannot afford it. The isl 6-330d and isl 6-430d are very good -- value for money. See: http://www.schulze-elektronik-gmbh.de/index_uk.htm Cameron RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
Are there automatic / peak detection chargers that will ramp down enough to put a small enough charge (C/10 or so) on the tiny 200 mAh NiMH (yep, quad A) batteries I'm using in HLG? All the ones I've found so far run at 100 mah / C/2 for these little buggers. Even wall warts at 50 mah are still running charges of C/4, not ideal. Thanks, Perry RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
Sure, the alpha charger will. But get in line, it is difficult to get one of these babies. perrypeckham wrote: Are there automatic / peak detection chargers that will ramp down enough to put a small enough charge (C/10 or so) on the tiny 200 mAh NiMH (yep, quad A) batteries I'm using in HLG? All the ones I've found so far run at 100 mah / C/2 for these little buggers. Even wall warts at 50 mah are still running charges of C/4, not ideal. Thanks, Perry RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. -- Jeff Steifel RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger slow charge tiny cells
At 3:48 PM + 11/9/04, perrypeckham wrote: Are there automatic / peak detection chargers that will ramp down enough to put a small enough charge (C/10 or so) on the tiny 200 mAh NiMH (yep, quad A) batteries I'm using in HLG? All the ones I've found so far run at 100 mah / C/2 for these little buggers. Even wall warts at 50 mah are still running charges of C/4, not ideal. Thanks, Perry You can use a wall wart and put a resistor in line to lower the current. Airtronics used to sell such a thing for the 250mah packs. ex: 6 volt @20mah needs a 300 ohm resistor someone check my math. a 1/4 watt resistor should be able to handle the load. Brian RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
I bought an Alpha 4 about six or seven years ago and have been quite happy with it. But (there is always a but) it did not have a separate discharge function it only cycled (once). NiCads like to be left discharged I have been led to believe. Ni-MH on the other hand like to be fully charged and can be harmed if fully discharged. So I have replaced most of my NiCads. What I learned was that I could not safely charge them on the Alpha 4 'Peak' function or even the 'c/10' function only the 'Fast charge' function. Recently I acquired two KAN Ni-MH 7 cell packs and was surprised to find that the Alpha 4 could not automatic charge them safely they got very hot. Since both packs got very hot, I suspect the KAN cells are just not compatible with Alpha 4 technology (which is easily 20 years old). (I mean we can plug in a cell phone to charge and just forget it.) Is there something about the KAN type cells that are different or is this an anomaly? Regis --- In [EMAIL PROTECTED], Brian Chan [EMAIL PROTECTED] wrote: At 2:46 PM -0800 11/8/04, Bill Malvey wrote: I use the Schulze isl 6-330d to charge them, from 4 cells to 30 cells. It is self regulated and when the charger beeps, it is fully charged, 98%-100%. The AA 1650 mah is charged about 1-1.2C, the 2600mah is charged at 2.2C(5.5-5.8 amp). One chager takes care of all the batteries(I am not saying that is the only charger I own!). The charger also charges and discharges Nicad, Nimh, Lipo, LiIon, Lead acid. Brian RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
Are there automatic / peak detection chargers that will ramp down enough to put a small enough charge (C/10 or so) on the tiny 200 mAh NiMH (yep, quad A) batteries I'm using in HLG? I use the Sirius 200 for the batteries. After the peak charge it switches to a maintenance mode which gives an occasional charge pulse every 10 seconds or so. If possible, I leave it in this mode for some time. It should be equivalent to a very slow trickle rate which will eventually equalize the pack. RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
That's the probelm with employing a NiCD charger that peak-detects for NiCD instead of NiMH. NiMH are endomthermic, while NiCD technology is exothermic. This means as an NiCD becomes fully charged, the increase in heat causes an increase in internal resistance, which lowers the charge V, which trips the peak-detect circuitry. Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. NiCD chargers are great at ruining perfectly good NiMH cells. Then the cells get blamed for poor performance... Quoting Regis White [EMAIL PROTECTED]: I bought an Alpha 4 about six or seven years ago and have been quite happy with it. But (there is always a but) it did not have a separate discharge function it only cycled (once). NiCads like to be left discharged I have been led to believe. Ni-MH on the other hand like to be fully charged and can be harmed if fully discharged. So I have replaced most of my NiCads. What I learned was that I could not safely charge them on the Alpha 4 'Peak' function or even the 'c/10' function only the 'Fast charge' function. Recently I acquired two KAN Ni-MH 7 cell packs and was surprised to find that the Alpha 4 could not automatic charge them safely they got very hot. Since both packs got very hot, I suspect the KAN cells are just not compatible with Alpha 4 technology (which is easily 20 years old). (I mean we can plug in a cell phone to charge and just forget it.) Is there something about the KAN type cells that are different or is this an anomaly? Regis --- In [EMAIL PROTECTED], Brian Chan [EMAIL PROTECTED] wrote: At 2:46 PM -0800 11/8/04, Bill Malvey wrote: I use the Schulze isl 6-330d to charge them, from 4 cells to 30 cells. It is self regulated and when the charger beeps, it is fully charged, 98%-100%. The AA 1650 mah is charged about 1-1.2C, the 2600mah is charged at 2.2C(5.5-5.8 amp). One chager takes care of all the batteries(I am not saying that is the only charger I own!). The charger also charges and discharges Nicad, Nimh, Lipo, LiIon, Lead acid. Brian RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Radius Systems Cogito Ergo Zoom RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
To quote Litco Systems directly from their manual for the Alpha 4 charger: PLEASE NOTE: ALL DEVICES ON A-4 EXCEPT W DEVICE ARE INTENDED FOR NI-CADS. ONLY V AND W DEVICES MAY BE USED WITH WET AND GEL CELLS (LEAD-ACID BATTERIES). ALL DEVICES EXCEPT A,S W ARE SUITABLE FOR NIMH BATTERIES (NICKEL-METAL-HYDRIDE). TO BE ON THE SAFE SIDE USE ONLY I AND C CHARGER WITH NIMH CELLS. :-) *smile* Cameron -Original Message- Date: Tue, 9 Nov 2004 11:43:28 -0800 From: Simon Van Leeuwen [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] com [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Message-ID: [EMAIL PROTECTED] That's the probelm with employing a NiCD charger that peak-detects for NiCD instead of NiMH. NiMH are endomthermic, while NiCD technology is exothermic. This means as an NiCD becomes fully charged, the increase in heat causes an increase in internal resistance, which lowers the charge V, which trips the peak-detect circuitry. Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. NiCD chargers are great at ruining perfectly good NiMH cells. Then the cells get blamed for poor performance... Quoting Regis White [EMAIL PROTECTED]: I bought an Alpha 4 about six or seven years ago and have been quite happy with it. But (there is always a but) it did not have a separate discharge function - it only cycled (once). NiCads like to be left discharged I have been led to believe. Ni-MH on the other hand like to be fully charged - and can be harmed if fully discharged. So I have replaced most of my NiCads. What I learned was that I could not safely charge them on the Alpha 4 'Peak' function or even the 'c/10' function - only the 'Fast charge' function. Recently I acquired two KAN Ni-MH 7 cell packs and was surprised to find that the Alpha 4 could not automatic charge them safely - they got very hot. Since both packs got very hot, I suspect the KAN cells are just not compatible with Alpha 4 technology (which is easily 20 years old). (I mean we can plug in a cell phone to charge and just forget it.) Is there something about the KAN type cells that are different or is this an anomaly? Regis RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
Since the A4 was released, the charge protocol for NiMH has changed significantly to better represent the characteristics of the cell chemistry. If memory serves (I owned one, then ditched it) only the peak overvoltage was dropped by a few mV as compared to the NiCD algorythm. The current accepted regime for NiMH is similar to: Stage 1: Charger algorythm applies a zero (slope) delta, essentially turns off the charge phase as soon as the fully charged state is reached (based on a V value, no overcharge above rated V). This brings the cell to ~80-90% of rated capacity (this value will decrease the more current pushed into the cell, as the rated V is reached sooner with an elevated charge V) Stage 2: Same charge current (or another lesser rate) is pulsed (duty cycle) to bring the cell 95% of rated Stage 3: Maintenance rate - same charge current (or another lesser value) is pulsed (shorter duty cycle) to maintain a fully charged state. The above applies to NiMH cells used for normal(?) operation, as opposed to propulsion applications (F5B, etc). Quoting Cameron [EMAIL PROTECTED]: To quote Litco Systems directly from their manual for the Alpha 4 charger: PLEASE NOTE: ALL DEVICES ON A-4 EXCEPT W DEVICE ARE INTENDED FOR NI-CADS. ONLY V AND W DEVICES MAY BE USED WITH WET AND GEL CELLS (LEAD-ACID BATTERIES). ALL DEVICES EXCEPT A,S W ARE SUITABLE FOR NIMH BATTERIES (NICKEL-METAL-HYDRIDE). TO BE ON THE SAFE SIDE USE ONLY I AND C CHARGER WITH NIMH CELLS. :-) *smile* Cameron -Original Message- Date: Tue, 9 Nov 2004 11:43:28 -0800 From: Simon Van Leeuwen [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] com [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Message-ID: [EMAIL PROTECTED] That's the probelm with employing a NiCD charger that peak-detects for NiCD instead of NiMH. NiMH are endomthermic, while NiCD technology is exothermic. This means as an NiCD becomes fully charged, the increase in heat causes an increase in internal resistance, which lowers the charge V, which trips the peak-detect circuitry. Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. NiCD chargers are great at ruining perfectly good NiMH cells. Then the cells get blamed for poor performance... Quoting Regis White [EMAIL PROTECTED]: I bought an Alpha 4 about six or seven years ago and have been quite happy with it. But (there is always a but) it did not have a separate discharge function - it only cycled (once). NiCads like to be left discharged I have been led to believe. Ni-MH on the other hand like to be fully charged - and can be harmed if fully discharged. So I have replaced most of my NiCads. What I learned was that I could not safely charge them on the Alpha 4 'Peak' function or even the 'c/10' function - only the 'Fast charge' function. Recently I acquired two KAN Ni-MH 7 cell packs and was surprised to find that the Alpha 4 could not automatic charge them safely - they got very hot. Since both packs got very hot, I suspect the KAN cells are just not compatible with Alpha 4 technology (which is easily 20 years old). (I mean we can plug in a cell phone to charge and just forget it.) Is there something about the KAN type cells that are different or is this an anomaly? Regis RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Radius Systems Cogito Ergo Zoom RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
Hi Regis, Those chargers that employ purpose-designed NiMH algorythms is what I would look for. Kinda tough to recommend any particular marque over another. Regis White wrote: Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. That explains why the packs got hot. The above applies to NiMH cells used for normal(?) operation, as opposed to propulsion applications (F5B, etc). So, is there a truly automatic charger for Efficient NiMH cells? Regis -Original Message- From: Simon Van Leeuwen [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 09, 2004 5:30 PM To: Cameron Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Since the A4 was released, the charge protocol for NiMH has changed significantly to better represent the characteristics of the cell chemistry. If memory serves (I owned one, then ditched it) only the peak overvoltage was dropped by a few mV as compared to the NiCD algorythm. The current accepted regime for NiMH is similar to: Stage 1: Charger algorythm applies a zero (slope) delta, essentially turns off the charge phase as soon as the fully charged state is reached (based on a V value, no overcharge above rated V). This brings the cell to ~80-90% of rated capacity (this value will decrease the more current pushed into the cell, as the rated V is reached sooner with an elevated charge V) Stage 2: Same charge current (or another lesser rate) is pulsed (duty cycle) to bring the cell 95% of rated Stage 3: Maintenance rate - same charge current (or another lesser value) is pulsed (shorter duty cycle) to maintain a fully charged state. The above applies to NiMH cells used for normal(?) operation, as opposed to propulsion applications (F5B, etc). Quoting Cameron [EMAIL PROTECTED]: To quote Litco Systems directly from their manual for the Alpha 4 charger: PLEASE NOTE: ALL DEVICES ON A-4 EXCEPT W DEVICE ARE INTENDED FOR NI-CADS. ONLY V AND W DEVICES MAY BE USED WITH WET AND GEL CELLS (LEAD-ACID BATTERIES). ALL DEVICES EXCEPT A,S W ARE SUITABLE FOR NIMH BATTERIES (NICKEL-METAL-HYDRIDE). TO BE ON THE SAFE SIDE USE ONLY I AND C CHARGER WITH NIMH CELLS. :-) *smile* Cameron -Original Message- Date: Tue, 9 Nov 2004 11:43:28 -0800 From: Simon Van Leeuwen [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] com [EMAIL PROTECTED] Subject: Re: [RCSE] Battery food-Charger Message-ID: [EMAIL PROTECTED] That's the probelm with employing a NiCD charger that peak-detects for NiCD instead of NiMH. NiMH are endomthermic, while NiCD technology is exothermic. This means as an NiCD becomes fully charged, the increase in heat causes an increase in internal resistance, which lowers the charge V, which trips the peak-detect circuitry. Efficient cells like the KAN's do not induce a voltage depression adequate enough to trip the peak-detect, so the charger keeps pumping in the current. NiCD chargers are great at ruining perfectly good NiMH cells. Then the cells get blamed for poor performance... -- Simon Van Leeuwen RADIUS SYSTEMS PnP SYSTEMS - The E-Harness of Choice Cogito Ergo Zooom RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Battery food-Charger
At 2:46 PM -0800 11/8/04, Bill Malvey wrote: On 11/8/04 14:38 Lydon, Matthew (NBC Universal) wrote: I've found (on transmitter packs) that the Sirius gives up at around 60% of charge, and that to get a full pack, I have to resort to a timed charge. You generally need to leave the packs on for about 3 hours after the lights start blinking to get a 100% charge. The blinking light means they are topped off enough to safely fly, but to get the 100% charge you need to let them trickle for a couple hours or so. At least that is what I have found with my three different Sirius chargers (Limited Edition, Quad, and Pro Series). ~~~ Bill Malvey I use the Schulze isl 6-330d to charge them, from 4 cells to 30 cells. It is self regulated and when the charger beeps, it is fully charged, 98%-100%. The AA 1650 mah is charged about 1-1.2C, the 2600mah is charged at 2.2C(5.5-5.8 amp). One chager takes care of all the batteries(I am not saying that is the only charger I own!). The charger also charges and discharges Nicad, Nimh, Lipo, LiIon, Lead acid. Brian -- Brian Chan, An Electric Airplane Junkie @ San Mateo.Ca.USA RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
