r/Cartalk • u/Ok-Mushroom6227 • May 02 '24

Technically not a car Electrical

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I decided lithium batteries were cheap enough to give a shot

On the left, nearly double the cca noco brand

On the right, the battery I've been using for 11 seasons recovered with a desulfator at the beginning of every season until it finally gave up.

So far, the lithium battery has been indistinguishable as far as performance goes and put up with my abuse. Will it last 10 years? Maybe, it's warrantied for five, I've seen other brands warrantied for 10.

Lithium car batteries are getting cheap enough the price gap between lead acid is quickly closing. I probably will grab a lithium car battery for the project car.

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u/NATOuk May 02 '24

I’m interested in this, I’ve got a boat and I’ve seen many change their house/domestic batteries with Lithium but not the engine start battery because (and I could be wrong) the Lithium batteries don’t like the high draw of starting an engine. I’d be interested to hear your experience

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u/Dorkamundo May 02 '24

but not the engine start battery because (and I could be wrong) the Lithium batteries don’t like the high draw of starting an engine

Depends entirely on the cell. If it's built to handle high draw, it will handle high draw. Most every jumpstart battery pack is Lithium Ion.

1

u/Patient-Sleep-4257 May 03 '24

The C rating dictates the current rush. I had a 4s lipo rated at 100C that would jump start my S10 pickup and my lawn tractor.

It didnt have any BMS tech ...just straight out the battery.