# 8 months old battery reading 12.31 volt at rest **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** toyota, camry\ **Created:** [October 5, 2022, 12:27pm UTC](https://community.cartalk.com/t/8-months-old-battery-reading-12-31-volt-at-rest/186734 "2022-10-05T12:27:44Z")\ **Posts on this page:** 1\ **Showing post:** 23
**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\ **Post date:** [October 5, 2022, 7:43pm UTC](https://community.cartalk.com/t/8-months-old-battery-reading-12-31-volt-at-rest/186734/23 "2022-10-05T19:43:21Z")
> [@Songhaeran4\_182531](#): > > Would one under $30 from Amazon be ok? I recommend against the cheap ones. I had one last 2 years and the next lasted 2 months. Neither met specs when new. I’ve gone down a different path, but if I were to go back to solar I’d get a major brand like Coleman or “Battery Tender”. Those run about 2x the cost of the Chinese odd-name stuff. > [@Disappointing solar panels from Amazon](https://community.cartalk.com/t/disappointing-solar-panels-from-amazon/185610): > > I’ve posted in other threads that I kept a 10W solar panel on the dashboard to keep the battery topped up. No more, at least for the time being. I first bought [a 5W panel](https://www.amazon.com/gp/product/B00QRHDIPY), thinking that would be adequate to make up for parasitic drain on my infrequently driven Tucson. However, measurement revealed it was only delivering ~2W on my dashboard in the sun. I chalked it up to windshield loss and bought a second identical panel, added in parallel. I would periodically check battery voltage (hood u… --- _[View the full topic](https://community.cartalk.com/t/8-months-old-battery-reading-12-31-volt-at-rest/186734)._