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BlueSolar PWM-DUO LCD-USB - Two Different Ah Banks

Currently have 2 of the BlueSolar PWM-DUOs rigged up in parrallel, so each one has a connection to battery bank 1 output and battery bank 2 output.

Is it acceptable for bank 1 and 2 to have different Ah capacities?

Specifically 10Ah 24V on one and 32Ah 24V on the other.

battery chargingLithium BatterybatteryBlueSolar PWMbattery connection
2 |3000

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1 Answer
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kevgermany answered ·

Not ideal. Whichever battery finishes charging first will be maintained at absorption voltage until the second also finishes charging. This will lead to a shorter service life. If you reduce the absorption voltage settings to the minimum for those batteries, you'll have less life reduction.

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