Best Battery Charger for Two Interstate SRM-24 Batteries on a Trailer
Question:
Will the 329-BLSOLARS work to charge and maintain two Interstate SRM-24 batteries on an Airstream travel trailer? Do I hook the red clip to the +terminal and the black clip to the same battery- terminal or to the second battery - terminal or to a ground?
asked by: James
Expert Reply:
The Battery Life Solar Battery Charger and Maintainer part 329-BLSOLAR5 is a great option for a smaller battery but won't do much at all for your two Interstate SRM-24 batteries.The most important aspect in choosing the correct battery charger is Ah (amp hours). The Battery Life Solar Battery Charger and Maintainer is rated for use on batteries between 1.2 - 20Ah (amp hours). The Interstate SRM-24 batteries you have are each rated at 84Ah each which means this battery charger will not be nearly enough for your needs. You will need a battery charger that is rated for at least 168 Ah for which the best option we have is the Redarc In-Vehicle BCDC Battery Charger part # 331-BCDC1225D because it is rated for use up to 200 Ah.
The Redarc charger will use the vehicle's alternator to charge the two trailer batteries. A solar panel setup for these batteries would be very expensive and not the best route in my opinion. I know this is a lot more than you were looking for but the batteries you have will require a good amount of power to keep them charged and maintained.

Product Page this Question was Asked From
Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp
- Battery Charger
- Battery Charger
- RV/Camper
- Trailer
- 75 Ah
- 200 Ah
- Charges/Maintains
- DC to DC
- 12V
- Solar Panels to Auxiliary Battery
- Vehicle Battery to Auxiliary Battery
- Redarc
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