question

jadmeest avatar image

Optimal B2B charger amperage

I am renovating a 1992 Ford RV, and I was wondering what amperage I need for my B2B charger. The alternator is rated at 70A. I am planning to put one 220Ah AGM battery, with a max charge current of 0.2C (translating to 44A).

Would a 30A B2B charger wear down my alternator too quickly? What about 20A or 15A?

Any help would be much appreciated:)

Kind regards

Jasper

battery chargingalternator
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1 Answer
basil katakuzinos avatar image
basil katakuzinos answered ·

Your battery size should be fine with charging up to 60Amps so the battery is not a limiting factor, I have seen similar systems with a 30 Amp charger that have not had problems. Just make sure you have engine running detection configured correctly. Can not speak for wear on the alternator as I do not really deal with RV setups but i can not imagine a 30Amp will be a problem as i have seen it used in many vehicles of different sizes.

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