Date: Sun, 26 May 2002 09:27:46 -0400 From: "Gennadiy Tsygan" <[EMAIL PROTECTED]> Subject: Re: [LIB] Panasonic li-ion
John, which cells were originally used in the PA2452 battery? Panasonic CGR 17670? I am thinking of buying the battery and using the cells to fix a 2503 battery for 110. I tried to put 1800 mAh Panasonic cells in it, but they wouldn't fit. ----- Original Message ----- From: "John Musielewicz" <[EMAIL PROTECTED]> To: "Libretto" <[EMAIL PROTECTED]> Sent: Saturday, May 18, 2002 3:45 AM Subject: [LIB] Panasonic li-ion > Date: Sat, 18 May 2002 02:27:44 -0500 > From: "John Musielewicz" <[EMAIL PROTECTED]> > Subject: Panasonic li-ion > > If anyone's interested here's the Panasonic site which has their li-ion > cells and technical info. > > > http://www.panasonic.com/industrial/battery/oem/chem/lithion/index.html > > They have a 1800 mAh cell but it is the same size as a 2000 mAh LG Chem. I > think with any 18mm cell there is going to be some modifications of the > case that will need to be done. Especially if the cells are stacked. That's > even saying the LG cells will survive with a panasonic charging system. I > think so though. I haven't seen a LG data sheet yet but every li-on cell I > have seen the data sheet for pretty much uses the same charging voltage and > current. Charge until it reaches 4.2 volts or the current drops to .1-.07 > CmA. On 1200 mAh is 120- 84 mA on 2000 mAh is 200-140 mA. About a 40 percent > differance and the lower range on the 2000 almost intesects with the 1200. > Personally I think the voltage will reach 4.2 before the battery becomes > seriously overcharged and overheats. It may not hurt to examine the board > though and see how they measure current. All it may take is a resistor > change to exactly match the capacity of the battery to the ammeter. I doubt > the controller has both an ammeter and voltmeter built in. Probably just a > voltmeter and it uses the voltage drop across a shunt resistor to measure > current. > > John > > > > > ************************************************************** > http://libretto.basiclink.com - Libretto mailing list > http://www.silverace.com/libretto/ - Archives > > -------TO UNSUBSCRIBE------- > Reply to any of the list messages. The reply mail should be > addressed to: [EMAIL PROTECTED] - Then replace any text > on the message's subject line: cmd:unsubscribe > --------TO UNSUBSCRIBE DIGEST------ > Do above but with this on subject line: cmd:unsubscribe digest > ************************************************************** > > > ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
