Re: [RCSE] TX battery - NiCd or NiMH?
You bet Jim, great cells. In competition, the packs are first heated to ~50C to realize their full potential. It is at these temperatures and higher that they offer excellent voltage retention! Jim Laurel wrote: Yes, for sure NiMh cells generally have lower impedance. But we are talking about the GP2200 here. I routinely draw around 70-95 amps from these things in my 10 and 12-cell electrics. A TD plane, fitted with DS368s will draw a max of what, 5-6 amps? --Jim On Mar 8, 2006, at 6:13 PM, Simon Van Leeuwen wrote: Hi Jim, The most important specification to consider is the cell impedence. You might be surprised to discover that cell (larger) surface area in those bigger NiMH cells still does not make up for lower impedence within an even smaller NiCD cell. Add a larger (similar) NiCD cell "and" the lower impendence it offers and you can actually measure the available voltage difference at the servo when it is really needed... Jim Laurel wrote: True enough, Simon. But if you use large enough NiMh cells, there is more than enough ability to deliver the kinds of currents we need. I have always thought it was silly to see people using 4- cell AA or even AAA NiMh packs in big TD ships, then adding lead to balance. I always try to get as close as possible to the CG I want using batteries rather than lead. In the Pike Superior, for example, I use 4-cell packs of GP2200. WIth a JR R770 up front and maybe ~3/4 to 1 oz of lead taped to the side of the pack, you are usually right on the CG. There is no current draw issue with those GP2200 cells! ;-) --Jim On Mar 8, 2006, at 5:40 PM, Simon Van Leeuwen wrote: In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
Yes, for sure NiMh cells generally have lower impedance. But we are talking about the GP2200 here. I routinely draw around 70-95 amps from these things in my 10 and 12-cell electrics. A TD plane, fitted with DS368s will draw a max of what, 5-6 amps? --Jim On Mar 8, 2006, at 6:13 PM, Simon Van Leeuwen wrote: Hi Jim, The most important specification to consider is the cell impedence. You might be surprised to discover that cell (larger) surface area in those bigger NiMH cells still does not make up for lower impedence within an even smaller NiCD cell. Add a larger (similar) NiCD cell "and" the lower impendence it offers and you can actually measure the available voltage difference at the servo when it is really needed... Jim Laurel wrote: True enough, Simon. But if you use large enough NiMh cells, there is more than enough ability to deliver the kinds of currents we need. I have always thought it was silly to see people using 4- cell AA or even AAA NiMh packs in big TD ships, then adding lead to balance. I always try to get as close as possible to the CG I want using batteries rather than lead. In the Pike Superior, for example, I use 4-cell packs of GP2200. WIth a JR R770 up front and maybe ~3/4 to 1 oz of lead taped to the side of the pack, you are usually right on the CG. There is no current draw issue with those GP2200 cells! ;-) --Jim On Mar 8, 2006, at 5:40 PM, Simon Van Leeuwen wrote: In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
They (NiCD's) are across the whole operating range... [EMAIL PROTECTED] wrote: There is no current draw issue with those GP2200 cells! ;-) how do those Nimh's hold up in cold temps. compared to Nicads ? from my experience the Nicads are better in cold. dh --Jim On Mar 8, 2006, at 5:40 PM, Simon Van Leeuwen wrote: In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
Hi Jim, The most important specification to consider is the cell impedence. You might be surprised to discover that cell (larger) surface area in those bigger NiMH cells still does not make up for lower impedence within an even smaller NiCD cell. Add a larger (similar) NiCD cell "and" the lower impendence it offers and you can actually measure the available voltage difference at the servo when it is really needed... Jim Laurel wrote: True enough, Simon. But if you use large enough NiMh cells, there is more than enough ability to deliver the kinds of currents we need. I have always thought it was silly to see people using 4-cell AA or even AAA NiMh packs in big TD ships, then adding lead to balance. I always try to get as close as possible to the CG I want using batteries rather than lead. In the Pike Superior, for example, I use 4-cell packs of GP2200. WIth a JR R770 up front and maybe ~3/4 to 1 oz of lead taped to the side of the pack, you are usually right on the CG. There is no current draw issue with those GP2200 cells! ;-) --Jim On Mar 8, 2006, at 5:40 PM, Simon Van Leeuwen wrote: In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
Arne, Consider that the transmitter has very little pulse load requirements, that is, the current drain is relatively constant so cell resistance is a minor consideration. Therefore, the NiMH battery with its superior capacity at moderate current is a better choice. The only downside to NiMH is a higher self discharge rate. So figuring 2% per day, you loose a little over half capacity in a month. That is still three hours of run time left for a typical TX with a good safety margin. I was convinced a few years ago and it has been working out very well. Either way, you have run time for anything except a Level 5 slope attempt! Dave Thacker at Radical RC provided batteries and connectors at reasonable prices. Jim MacLean 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
There is no current draw issue with those GP2200 cells! ;-) how do those Nimh's hold up in cold temps. compared to Nicads ? from my experience the Nicads are better in cold. dh --Jim On Mar 8, 2006, at 5:40 PM, Simon Van Leeuwen wrote: In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
True enough, Simon. But if you use large enough NiMh cells, there is more than enough ability to deliver the kinds of currents we need. I have always thought it was silly to see people using 4-cell AA or even AAA NiMh packs in big TD ships, then adding lead to balance. I always try to get as close as possible to the CG I want using batteries rather than lead. In the Pike Superior, for example, I use 4-cell packs of GP2200. WIth a JR R770 up front and maybe ~3/4 to 1 oz of lead taped to the side of the pack, you are usually right on the CG. There is no current draw issue with those GP2200 cells! ;-) --Jim On Mar 8, 2006, at 5:40 PM, Simon Van Leeuwen wrote: In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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 soaring- [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
In a TX, NiMH offers superior performance given the relatively low current consumption. On the other hand, NiMH is inferior on the RX side when current demands are high when compared to NiCD. Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format -- 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
Arne, I would suggest replacing your OEM NiCd pack with a higher capacity NiMh pack. I did it a few years ago and have been delighted. I can just about do a complete 2-day contest with my JR 9303 on a single charge. I am using the 1650mAh Sanyo pack built by Steve Anthony at hangtimes.com. The "NoBS" packs from Hangtimes cost a little more, but you are getting a top-quality pack. Remember, it's not only about the cells. Pack construction is just as important. Everything depends on your TX. A few extra bucks for the very best is money well spent, in my book. http://hangtimes.com/txpacks.html I also have a TX pack from Batteries America based on the Sanyo HR3U "Twicell" 2300mAh cells. This works fine as well, but it is apparent when you look at both packs that the Hangtimes pack was built to a much higher standard. Cheers - Jim Laurel On Mar 8, 2006, at 3:45 PM, Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
What Doug said. :-) Bill Swingle Janesville, CA 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
On Thu, Mar 09, 2006 at 02:07:34AM +0200, Arne Ansper wrote: | On Wed, 8 Mar 2006, Bill Swingle wrote: | | >Each will work fine for the TX. | >How will you charge it? | | I have Reflex charger that does peak prediction (same chip that is inside | Sirius chargers), but it will only output 650mA max. I've heard that NiMH | cells do not like too low charging current and 650mA is almost 1/3C. The danger with a low charge rate is that peaks are harder to detect, so you run the risk of overcharging your battery if your charger doesn't have a safety timer or a temperature probe. My Triton has no problems detecting peaks even at a C/4 charge rate with NiMH cells, and so I suspect that your Reflex won't either. | >Do you tend to abbuse your batteries? | | No. -- Doug McLaren, [EMAIL PROTECTED] The only time you have too much fuel is when you're on fire. 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
Arne, The NiCd will have a longer life span, and the NiMH needs a GOOD quality charger designed with NiMH features. George The Sirius Charger guy At 01:45 AM 3/9/2006 +0200, Arne Ansper wrote: Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
On Thu, Mar 09, 2006 at 01:45:08AM +0200, Arne Ansper wrote: | Must get new battery for TX. Current one is down to 500mAh (from 750mAh) | and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH | (both Sanyo) at the same price. Which one is better for TX? The TX doesn't really care -- both will work. The current draw is low, so NiMH cells will work just as well as NiCd cells, and with the added capacity, will last longer. Some simple math suggests about eight hours for the 1650 mAh cells -- basically all day. Your slow wall-wart charger will work just fine, but with a pack that's 3x as large, a full charge will take 3x as long. A fast charger will work as well, as long as it can do NiMH properly (and nowadays, most can.) NiCd cells do last longer (i.e. more years, more cycles) in general, and will tolerate abuse better (i.e. fast charging, or leaving it on the slow charger for weeks at a time) but the difference isn't that large. NiCd cells also handle high current draw abuse and vibrational abuse (more of an issue in glow plane RX packs) but for a TX, neither one is a problem. You can also charge NiCd cells faster (2C or so vs 1C) but I'd rather just not have to charge at the field at all if I can avoid it, so ... NiMH cells do have a larger (2-3 times as large) self-discharge rate, so after a week or two they'll be more discharged than a NiCd pack, but if you charge the night before flying, you won't have any problem. And so I make NiMH packs for my TX's nowadays in most cases, especially for my computer TX's that draw a lot more current than the old non-computer ones. -- Doug McLaren, [EMAIL PROTECTED] `The only time you have too much fuel is when you're on fire.' 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
On Wed, 8 Mar 2006, Bill Swingle wrote: Each will work fine for the TX. How will you charge it? I have Reflex charger that does peak prediction (same chip that is inside Sirius chargers), but it will only output 650mA max. I've heard that NiMH cells do not like too low charging current and 650mA is almost 1/3C. Do you tend to abbuse your batteries? No. regards, Arne 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
Re: [RCSE] TX battery - NiCd or NiMH?
Each will work fine for the TX. How will you charge it? Do you tend to abbuse your batteries? Bill Swingle Janesville, CA 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
[RCSE] TX battery - NiCd or NiMH?
Hi! Must get new battery for TX. Current one is down to 500mAh (from 750mAh) and lasts only for 2.5 hours. I can get 1100 mAh NiCd or 1650 mAh NiMH (both Sanyo) at the same price. Which one is better for TX? Arne 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. Email sent from web based email such as Hotmail and AOL are generally NOT in text format