3x 1S balanced charging lead: How to setup correctly? - RC Groups
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Jan 15, 2013, 10:52 AM
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3x 1S balanced charging lead: How to setup correctly?


i bought a 3x 1S balanced charging lead, for charging 3 lipo batteries with my Turnigy Accucel 6 charger.

My question is following:
I'd like to charge 3x 1S 500mah with this lead.
So i will connect everything to the charger and select the 3S balanced charging program.
But which current should be selected?
From my logic i should take 1.5 A (=> 3x 500mah = 1.5 A), but as i understand this current will also be taken for the balancing process afterwards. => So if there is for example only 1 of the 3 batteries left for being balanced, this one battery would also be balanced with 1.5 A or?
(Which would surely kill the battery)
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Jan 15, 2013, 10:59 AM
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That lead connects the cells in series not parallel, that's why you're using the 3S program. So, assuming you want to charge at 1C, the current should be that suitable for a 3S 500mAh battery i.e. 500mA NOT 1.5A.

Jan 15, 2013, 11:45 AM
Registered User
As slipstick said do not add the capacities since they are in series. So for 1C charge rate you would do a 3S 0.5A charge.

Don't worry about the balancing process, it knows what it is doing. It's actually not an afterwards thing but starts during the CV phase of the charging cycle. In short it only provides the current needed to keep the cells at 4.2v per cell and it actually bleeds off excess current across cells that are already done to keep them from getting over charged.

Also note that since it is a series adapter you MUST always charge 3 batteries at once. It will not work if you only connect one or two.
Last edited by grimbeaver; Jan 15, 2013 at 12:03 PM.
Jan 15, 2013, 01:55 PM
Registered User
ok, thx a lot for your replies

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