Lithium Ion Battery Jump Starters

[Leegamer]

the more EVs there are, the more combustion engine cars I'll buy and put straight pipes on.

[myfirstyota]

Originally Posted by Leegamer

the more EVs there are, the more combustion engine cars I'll buy and put straight pipes on.

I like your style Lee!

[Leegamer]

Originally Posted by myfirstyota

I like your style Lee!

The dude abides!

[suprf1y]

In an effort to get as light as possible I used to run a Lithium ion battery in one of my previous cars. It was technically a summer only car but I drove it as long as there was no snow or salt on the road. It got pretty dicey in late November/early December after a 12hr night shift. It always started, but since they regain voltage as they heat up, I often had to short crank it 3-4 times to let the battery heat before it would actually turn it fast enough to start.

[kevinj93]

Anyone had a look at the "Rescue Mate" jump starter? http://www.rescue-mate.com
This uses capacitors instead of lithium batteries, and charges from the residual power still in the car battery.

[myfirstyota]

I used to know a guy who ran a powersports battery (think motorcycle or riding lawnmower). But this was way before lithium batteries were popular.

Now how would you charge that battery? Don't lithium batteries need special chemistry when charging? Won't a standard alternator f_ck sh_t up?

[IllusionX]

Originally Posted by myfirstyota

I used to know a guy who ran a powersports battery (think motorcycle or riding lawnmower). But this was way before lithium batteries were popular.

Now how would you charge that battery? Don't lithium batteries need special chemistry when charging? Won't a standard alternator f_ck sh_t up?

You need a charge controller, but it's no mystery. They charge to 4.2v full

Sent from my CLT-L04 using Tapatalk

[myfirstyota]

So you just have it wired up to charge while you're driving just like normal battery? Or do you remove the battery and charge on a normal a/c style lithium charger like ones used for hobbies?

[suprf1y]

I left that battery in the car full time and had no external charger. I used one in my dual sport bike as well. I accidentally ran one of them down once and brought it back with a simple automotive battery charger. My electronic charger wanted nothing to do with it.