Having had issues with D3 management in the past I did look into it and given the number of cells on the roof it would output, 3Amps of power and 35W and that's the same as a Cetek trickle charger.. In theory it would charge a battery just fine
I must be honest though ( touching wood profusely) I’ve had no issues with the new car battery wise at all its honestly perfect .. Maybe if it’s not broke ...I should ...