How to Pick Out Redarc DC to DC Battery Charger for 450 Amp Hour Battery Bank

Question:

I need advice on whether to choose the Redarc 331-BCDC1240D 40amp charger or the larger 50amp version for a lead acid battery bank of 450 amp hours. They both seem to be designed for 200 amp hours and higher so which of these would be best?

asked by: Warren T

Helpful Expert Reply:

The only difference between the Redarc # 331-BCDC1240D and # 331-BCDC1250D is the maximum output rating of 40 amps and 50 amps, respectively. Both of these charging units are designed for battery banks above 200 amp-hours. The difference in output means that the 50 amp version will charge your battery from dead to 100% charge faster than the 40 amp version. Overall, I recommend the 50 amp version as it would be able to charge a dead battery faster than the 40 amp version.

expert reply by: John R