Charger recommendation

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negev
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Charger recommendation

Hi

I have an Xtar VC2, it seems to work well enough but I would like a charger that is capable of charging to 4V rather than 4.2V, with the intention being to charge to 4V after battery use, then top it off to 4.2V shortly before I need to use it. This is what modern macbooks do to prolong battery life.

Are there any good quality chargers that can set the target voltage?

Thanks,
Mark

Lux-Perpetua
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IMHO, this low difference between 4.00V and 4.20V is quite negligible if you really aim to prolong battery life. You will have big difficulties finding a charger with fully selectable termination voltage. The only typical charger I know of is SkyRC‘s MC3000 (except for special chargers for R/C devices). The MC3000 however needs a certain learning curve and will not accept 21700 batteries, at least not conveniently.

 

My recommendation is:

Look for any charger that supports charging LiFePO₄ batteries. This setting will set the battery voltage to 3.7V which is considered the optimum voltage for storing batteries.

negev
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Storage isn’t what I’m looking for, I want to charge to 80% so they’re nearly ready to go and then just top off quickly before I need them.