Looking for a battery
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From: Dave, I can't do that on 12 Aug 2010 20:55 Hi All, I have a solder-in battery that I suspect may be Li-Ion. On one side it has GSP 452540 420mAh 3.7v and on the other side 452540/42 HKM-036 It is 3/16" thick x 1" wide x 1-1/2" long, one red wire, one black. Any suggestions on where I can get a couple? Searches have not turned up much other than possibly a Motorola V70 phone battery but it shows 4-connectors. Thanks Dave
From: Tim Wescott on 12 Aug 2010 22:04 On 08/12/2010 05:55 PM, Dave, I can't do that wrote: > Hi All, > > I have a solder-in battery that I suspect may be Li-Ion. On one side > it has > > GSP 452540 > 420mAh 3.7v > > and on the other side > > 452540/42 > HKM-036 > > It is 3/16" thick x 1" wide x 1-1/2" long, one red wire, one black. > > Any suggestions on where I can get a couple? > > Searches have not turned up much other than possibly a Motorola V70 > phone battery but it shows 4-connectors. Try Batteries America. I _think_ their URL is www.batteriesamerica.com. If that's the place I'm thinking of, they sell single cells. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com Do you need to implement control loops in software? "Applied Control Theory for Embedded Systems" was written for you. See details at http://www.wescottdesign.com/actfes/actfes.html
From: David Eather on 13 Aug 2010 05:04 On 13/08/2010 10:55 AM, Dave, I can't do that wrote: > Hi All, > > I have a solder-in battery that I suspect may be Li-Ion. On one side > it has > > GSP 452540 > 420mAh 3.7v > > and on the other side > > 452540/42 > HKM-036 > > It is 3/16" thick x 1" wide x 1-1/2" long, one red wire, one black. > > Any suggestions on where I can get a couple? > > Searches have not turned up much other than possibly a Motorola V70 > phone battery but it shows 4-connectors. > > Thanks > > Dave Two of the connectors on the phone battery are for a thermistor http://www.dealextreme.com/details.dx/sku.23704
From: Dave, I can't do that on 13 Aug 2010 10:14 Thanks Tim and David, I will have to take the actual battery out of the Motorola enclosure. Can I parallel these up for double the life? The unit it came out of has a piezo "speaker" glued to the battery and I can do without that. It and the silicone goop they used to hold it in are about the same size as another battery. I assume the thermistor is there to shut it down if it gets too hot with the charger in and in-use. For my use, it is never turned on when charging. It is either in use, or on charge, never both. Thanks so much for your help and knowledge. Dave
From: David Eather on 13 Aug 2010 18:10
On 14/08/2010 12:14 AM, Dave, I can't do that wrote: > Thanks Tim and David, > > I will have to take the actual battery out of the Motorola enclosure. > Can I parallel these up for double the life? The unit it came out of > has a piezo "speaker" glued to the battery and I can do without that. > It and the silicone goop they used to hold it in are about the same > size as another battery. > > I assume the thermistor is there to shut it down if it gets too hot > with the charger in and in-use. For my use, it is never turned on when > charging. It is either in use, or on charge, never both. > > Thanks so much for your help and knowledge. > > Dave My understanding is that you can parallel lithium batteries - but I would try to find a bigger battery first. |