Keystone RV Forums - View Single Post

MarkEHansen · 04-05-2020, 07:35 AM

We purchased the Interstate 6 volt golf cart batteries from Costco. These were Costco item number 850284. This battery was recommended by others on this group, but there are other good batteries too.

Proper use and handling of coach batteries takes some learning - it's not like batteries in your TV remote. We purchased a battery monitor so we can see how our batteries are doing at any time. The unit we installed is the Victron BMV-712. Not only is it full-featured, but it also provides bluetooth connectivity so I can monitor from my smart phone.

I know there are some who say they can determine the state of charge of their coach batteries by looking at the voltage, but we found this is really difficult to do. Any load on the batteries (like lights, CO detector, water heater/fridge control boards, furnace, etc.) will change the voltage reading. The battery monitor takes all the guess work (and in-head calculations) out of the mix.

Best Regards,

04-05-2020, 07:35 AM	#10
MarkEHansen Senior Member Join Date: Oct 2018 Location: Sacramento Posts: 1,005	We purchased the Interstate 6 volt golf cart batteries from Costco. These were Costco item number 850284. This battery was recommended by others on this group, but there are other good batteries too. Proper use and handling of coach batteries takes some learning - it's not like batteries in your TV remote. We purchased a battery monitor so we can see how our batteries are doing at any time. The unit we installed is the Victron BMV-712. Not only is it full-featured, but it also provides bluetooth connectivity so I can monitor from my smart phone. I know there are some who say they can determine the state of charge of their coach batteries by looking at the voltage, but we found this is really difficult to do. Any load on the batteries (like lights, CO detector, water heater/fridge control boards, furnace, etc.) will change the voltage reading. The battery monitor takes all the guess work (and in-head calculations) out of the mix. Best Regards, __________________ 2022 Cedar Creek Champagne 38EL - "Big Bertha" 2019 GMC Sierra 3500 Denali HD 6.6L Duramax TD, CC, 4WD, DRW - "Mr. Beefy"