NEED HELP ASAP !!! My car doesn't start without jumpers. Was parked for more than 60 days and I need to know if i can charge the 2015 prius c auxiliary battery under the seat with a regular shop battery charger??? Thanks
If you can jump start the car, but the battery needs to be jumped every time you park the car after driving it, your 12 volt auxiliary battery isn't holding a charge and will need to be replaced. Leaving the car parked for 60 days can ruin a lead acid battery, especially if the battery was already a few years old. You can charge the battery but it won't restore it to health.
You can test the battery, not just the voltage but its viability, with an electronic load tester. I’m not sure of the generic name for this sort of tester; there’s various ones available. Solar BA9 is a current one. I have an older BA5, so familiar with that line: you connect its clamps directly to battery posts, enter some stats (battery type and rated CCA), then start test. In a split second it lets you know as-tested CCA and gives a verdict: pass, pass-but-recharge or fail. that said, yours likely will need replacement. But these are handy gizmos. In the interim, if you can get the whole car, or even just the ailing battery, to an automotive retailer selling batteries, they’ll often have pro-level testers of this ilk, and be willing to test yours for free. Check with them before going in.
I decided to but a new auxiliary battery because mine is dead after great service of 4 years. My question is: Do I have to buy exactly the same battery group in my case 35, or can I buy a more powerful battery?? These are the specs of my Superstart group 35 battery: SUPERSTART 2015 PRIUS C CCA 340 CA 420, RES CAP 35 Dimens: L 7.5/8", H 8" , W 5" If I buy a more powerful battery will this trigger any malfunctions of the ECM module or other electrical devices??
I decided to buy a new auxiliary battery because mine is dead after great service of 4 years. My question is: Do I have to buy exactly the same battery group in my case 35, or can I buy a more powerful battery?? These are the specs of my Superstart group 35 battery: SUPERSTART 2015 PRIUS C CCA 340 CA 420, RES CAP 35 Dimens: L 7.5/8", H 8" , W 5" If I buy a more powerful battery will this trigger any malfunctions of the ECM module or other electrical devices??
Your car doesn't need a more powerful battery. A Prius battery doesn't crank over the engine, it only supplies power for the electronics and the lights, which are low draw applications. Prius 12 volt batteries are a tight fit on some models and may have odd terminals and a vent tube. When the battery on my 2018 C quit after five years I just went with a Toyota battery after looking at the options. It wasn't that expensive. If it will fit in, a more powerful battery won't cause electrical problems.
“More powerful”, as in more cranking amps or more amp hours? As one increases the other decreases, just from what I’ve read. All things being equal amp hours may be the more important factor? There’s dimensionally identical, similar to OEM spec options; I’d go with one of those, and take care of it, research phantom load, how to deal with it.
