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Old Nov 19, 2014, 12:37 PM
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Help!
Shorai Life Motorcycle battery Lithium Iron

So I am getting a Shorai for my Yamaha and would love to be able to use one of my RC chargers to balance charge it. They sell a charger for it but I know I can make one of my multiple chemistry chargers work. The pic is a harness they sell for their charger. It looks like it is charged through the balance cables only and the connector looks like a XH style. What say the charger experts? I have only dealt with LIPO batteries but I assume this would just be a big 3 cell? Also it appears through my internet research that I need to use the life setting and not Lithium Ion
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Last edited by Mr Big Head; Nov 19, 2014 at 07:21 PM.
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Old Nov 19, 2014, 07:51 PM
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Under that gray cover in the middle is a xh style plug. Also more investigating has these charged as a four cell. 3.3 volts per cell with a terminal voltage of 13.2
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Old Nov 20, 2014, 01:01 PM
jrb
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Edina, MN, USA
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Not sure about LiFe; but, the original A123s are 3.6 Hot of the Charger -- as in 36v for ten, or 18v for five ~ 10.8 for three.

Most of us charged them to 3.8v when using a precision power supply.

And, some even routinely used Lion chargers @ 4.1!

Zip charging of 3S / Pb works well w/A123s; even 10S off 3 SLAs in series.

A123-4S is closer to full/HOC 12v Pb ~ 14.4.



Looking at their site ( http://shoraipower.com/ ) and chargers is a bit confusing as the look like they only charge via the balance taps & I count 7?

3S is 4 wires (S+1); while 4S = 5 wires.


Keep us posted on what you learn.
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Old Nov 21, 2014, 11:26 AM
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I have one of those in my Kawasaki. LiFe would be a 4s. I don't try to balance charge it, you can use a Pb charger on them too since the motorcycle is a Pb charger. I do use the LiFe setting on my charger during the winter since the electronics will drain them over time.
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Old Nov 21, 2014, 02:59 PM
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I have a 4S2P Lithium Ion pack in my Kawasaki Vulcan that I built from "defective" De-Walt drill packs that I bought on ebay. I built it with balance taps. I initially balance charged it on my CellPro 10s over 3 years ago. Since then the alternator has done all the charging. Every now and then if I think about it I'll check it for balance but it's always spot on. Including the 100 amp APP connectors and AWG6 wires I probably have less than $30.00 invested.

Joe
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Old Nov 21, 2014, 04:42 PM
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I think it will be easy to balance charge it since it uses xh style plugs for balance. I am just afraid to hook it up wrong. I am thinking I will hook up the main power leads from my Hyperion charger to the main leads of the battery. Then the balance plug. I need to get it in my hands so I can figure out the wiring. It should be here tomorrow.
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