I need a Life Cell Charger To balance The Verda

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strawhistle
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I need a Life Cell Charger To balance The Verda

:O :?

I need to find a battery charger for this byke I think the cells are already unbalanced and should take it apart and charge each cell to store them till I hear from Mountain chen or john . SO Anyone know a good lifepo4 cell charger??? LaTeR

antiscab
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Re: I need a Life Cell Charger To balance The Verda

singe cell charging is easy.
just take any variable power supply,
set max voltage as 3.8v, and max current as 10A or less.
stop charging when charge current goes under 0.5A. If you dont stop charging after current goes below 0.5A, nothing bad happens, so you dont have to sit there watching the process. it might just take a little longer if you dont.

charge each cell one by one with the above method.
how long it takes depends on how far out of balance the cells are.

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah in July 2010. Done 194'000km

antiscab
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Re: I need a Life Cell Charger To balance The Verda

oh, the above assumes that you have thundersky cells (i assume thats what mountain chen uses?)
if they arent, set max voltage as 3.6v.
the rest is the same.

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah in July 2010. Done 194'000km

strawhistle
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Re: I need a Life Cell Charger To balance The Verda

The problem now is were do i get a Veriable power supply all i have is thundersky's 69V and my car charger 12V ???? Thanks

thank GOD I wake up above ground !!!!

antiscab
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Re: I need a Life Cell Charger To balance The Verda

well a power supply can be had off ebay such as this one:
http://cgi.ebay.com/MASTECH-REGULATED-VARIABLE-DC-POWER-SUPPLY-0-30V-0-3A_W0QQitemZ130245014844QQcmdZViewItem?hash=item130245014...
or
http://cgi.ebay.com/MASTECH-TRIPLE-DC-LAB-POWER-SUPPLY-0-30-V-0-10A_W0QQitemZ120292725121QQcmdZViewItem?hash=item120292725121&_t...

i own one of the 2nd one, its the 3rd most useful tool i have (after my trusty clamp meter, and my AH counter).

if you have no BMS, i recommend buying a lab power supply (actually, i recommend buying a BMS aswell).

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah in July 2010. Done 194'000km

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