I've posted several times that I use and recommend the BatteryMinder sold at Northern Tools. I have several and keep on on my riding mower full time. After the battery reaches full charge, it goes into maintenance mode and begins pulsing the battery to break up any sulfate on the plates that kills batteries. I get over 5 years on the cheap 1 year batteries sold for riding lawnmowers stored in my unheated outside shed. I got 10 years out of my MH's chassis battery before it died. The latest model has temperature compensation circuitry built-in. Here's link to Northern Tools page where they are often on sale for under $30 (on sale for $21 right now):
https://www.northerntool.com/shop/tools/product_200332201_200332201
- Full-time battery monitoring automatically tests battery continually, supplying only the current needed to maintain battery at full charge.
- 8-stage unit charges and maintains from 1 to 4 batteries at a time (12V batteries parallel-connected or two 6V batteries series-connected. NOTE: Never connect 2 or more batteries together in parallel before fully charging each and checking their condition. Failure to fully charge each battery and check their condition can result in a serious safety hazard)
- Does not overcharge, regardless of time connected
- High-frequency pulses safely remove sulfate from battery's plates that prevent the batteries from holding a full charge
- No need to add water to maintenance-type batteries during long, non-use storage
Don Ford wrote:
I am not connected with Northern Tools or BatteryMinder in any way - just know a good thing when I see it.
