LiFepo4 single cell charger CC CV 2A 10$

Batteries, Chargers, and Battery Management Systems.

LiFepo4 single cell charger CC CV 2A 10$

Postby Doctorbass » Tue Aug 28, 2007 10:14 am

I found a source of LiFePo4 18650 and cheap charger for them

https://s.p10.hostingprod.com/@www.voltphreaks.com/ssl/catalog/product_info.php?products_id=28

Doc
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Postby NickF23 » Tue Aug 28, 2007 12:44 pm

That looks a promising source. Interesting the varying energy density of the 'power' and 'energy' cells. I suppose that given the similar voltage profiles it would be possible to mix a few of each in a parallel array to get light pack with a decent discharge rate.
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Postby Ypedal » Tue Aug 28, 2007 12:54 pm

The cycle life of each is not the same.. over time i think mixing them would become a problem...
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Postby xyster » Tue Aug 28, 2007 1:02 pm

I'm liking those single-cell chargers -- a fine method for keeping a pack balanced, IMO. :D

Doesn't look there's an option for tabbed cells.
Ebike: 5304/20", 72V 35A controller, 33AH 80V 20s15p (18650 sized cells) DIY lithium-ion pack
http://endless-sphere.com/forums/viewto ... 47&start=0
Scooter: '06 Stealth s1000, 48V 30A, 4x10ah SLA
http://endless-sphere.com/forums/viewtopic.php?t=148
Ebike: '06 Currie Mongoose, 32V 35A, 32V 22AH hybrid SLA/Li-ion pack
http://endless-sphere.com/forums/viewtopic.php?t=1010
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Postby CGameProgrammer » Tue Aug 28, 2007 1:28 pm

Interesting, but it's still $96 to charge the equivalent of a single DeWalt pack (10 cells) vs ~$35 for a DeWalt charger on eBay.
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Postby Doctorbass » Tue Aug 28, 2007 1:34 pm

CGameProgrammer wrote:Interesting, but it's still $96 to charge the equivalent of a single DeWalt pack (10 cells) vs ~$35 for a DeWalt charger on eBay.


But the dewalt charger can only charge 10 cells at a time.. less cells is impossible without finding a big 10W 3.6V zenner diode for each cell fake...


The solution of multiple independent cahrger is very flexible :wink:
the connections are very simple and you have less possibility to brocke something du to accidental wiring error... like on the dewalt BMS...

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Last edited by Doctorbass on Tue Aug 28, 2007 1:37 pm, edited 1 time in total.
________________
-Fastest speed record from now: 113 km/h measured on GPS
-Fastest ebike 106km/h on flat and managed to enter in the 19.875 sec on the 1/4 mile drag racing !
-0-70km/h in 5sec X5 5303 on 24"
TORQUE SETUP:
-Succeded to haul a 19200 pounds schoolbus!
-Team Konion Member
113kmh Giant___http://www.evalbum.com/3406
Mongoose____http://www.evalbum.com/1947
E-trike_______ http://www.evalbum.com/3776
http://twitter.com/DocbassMelancon
I speak FRENCH and english
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Postby xyster » Tue Aug 28, 2007 1:36 pm

CGameProgrammer wrote:Interesting, but it's still $96 to charge the equivalent of a single DeWalt pack (10 cells) vs ~$35 for a DeWalt charger on eBay.


But with single cell chargers balancing the pack, it's relatively safe to forgo or bypass the BMS -- as I do with my much less safe lithium cobalt pack.
Ebike: 5304/20", 72V 35A controller, 33AH 80V 20s15p (18650 sized cells) DIY lithium-ion pack
http://endless-sphere.com/forums/viewto ... 47&start=0
Scooter: '06 Stealth s1000, 48V 30A, 4x10ah SLA
http://endless-sphere.com/forums/viewtopic.php?t=148
Ebike: '06 Currie Mongoose, 32V 35A, 32V 22AH hybrid SLA/Li-ion pack
http://endless-sphere.com/forums/viewtopic.php?t=1010
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