The most effective way to wire up a second battery is to connect them both in parallel so they both do the same job. Following your recent explanation of the benefits of fitting two batteries, I am ...

This is probably fairly straightforward for an EE to weigh in on so I thought I’d post this question here for posterity in the hopes that it’ll solve the issue for other designers. The challenge is ...

I have a Sears deep-cycle lead-acid 12v battery already which I've only used once or twice a year for certain power applications. I was thinking of purchasing an identical model and wiring it in ...