CTEK Battery Charger that Can Charge and Maintain 100 Amp Hour Battery

Question:

I am finding a spec confusing related to matching a battery charger to a deep cycle battery for use in a travel trailer. NOCO and CTEK chargers state a different rating for charging and maintaining. If I have a 100Ah rated battery ... which spec do I judge by? For instance, the CTEK 330 maintains batteries up to 120 Ah seems more than enough, but charges batteries up to 75 Ah seems too small. So, is a good choice for over-winter use, but insufficient to keep a 100 Ah battery up to snuff during the camping season? Or fully capable and appropriate? Appreciate your insight on sorting this out. Thanks!

asked by: Bill S

Expert Reply:

NOCO and CTEK are different companies and do have slightly different recommendations for battery charging applications. That said, the CTEK MULTI US 3300 # CTEK56353 would work really well to charge and maintain a 100 amp hour battery over the winter. It can be used to charge a 100 amp battery but due to it's lower amperage output it would take over a day to do so. But a maintenance charge is much lower so the higher amperage rating would not be needed for this function.

I have this charger and have used it to charge larger vehicle batteries and it did a really great job.

expert reply by: Jameson C