Can you start a vehicle while on the charger?

[joekingcorvette]

Yes you can start it while charging. Unless you really need to go somewhere right away I would let the charger bring it to full charge on it's own. Using the alternator to charge it up to max only puts extra stress on the alternator. I am not sure it hurts the alternator that much but I wouldn't do it too often.

 

[racer12306]

I need to just get that battery tinder thing and plug it in every so often.

Get a tender and leave it plugged in all the time. They're pretty smart to take care of the battery.

I destroyed a car battery by lack of use. After that, I got a tender and if I was sitting for more than a day, I plugged it in. It usually sat for weeks at a time.

 

[The motor guy]

Get a tender and leave it plugged in all the time. They're pretty smart to take care of the battery.

I destroyed a car battery by lack of use. After that, I got a tender and if I was sitting for more than a day, I plugged it in. It usually sat for weeks at a time.

I thought they had one that stays installed on the battery and you just plug it in without having to access the battery, remove the seat etc. I can't find it now.

 

[racer12306]

I thought they had one that stays installed on the battery and you just plug it in without having to access the battery, remove the seat etc. I can't find it now.

I don't know the full offering, however, the Battery Tender brand you can attached a pig tail to the battery but you would still need to plug into it.

My point was only that if it's not moving, plug it in unless you plan to use it tomorrow.

In this pic, you can see the eyes that you would attached to the battery

 

[SC Maintenance]

I've found that typical car alternator system only give a about 10 to 12 amps with everything else off at idle.
13.5v is bulk charging voltage so the state of charge could really be anywhere when charging at 13.5v.
Better off just letting it sit and cook on the charger.

13.5V would actually not be charging. Its more of a float voltage. It takes at least 1V over nominal voltage to actually charge - so with a 12.6V nominal battery, it wouldn't start charging until 13.6V, and that would be a pretty slow charge - like a trickle.

If its sitting at 13.5V its just pushing current for the car to run rather than drain the battery - and somehow thinks the battery is charged.

 

[John105]

I did it by mistake and nothing happened, 5A NOCO.

 

[JHZR2]

I’d be careful as I don’t know how well protected most chargers are for reverse power protection.

 

[The motor guy]

I think the battery is pooched. Still at 11.5v after charging for like 2hrs

 

[Lubener]

I think the battery is pooched. Still at 11.5v after charging for like 2hrs

A bad cell.

 

[cptbarkey]

I think the battery is pooched. Still at 11.5v after charging for like 2hrs

A few weeks ago same thing with a Walmart 3 year maxx battery I bought in July. They warranty replaced it but I upgraded to an AGM.

 

[Egg_Head]

I did it by mistake once and blew out my old Schumacher charger. I as able to replace the fried component. I would not recommend doing it.

 

[The motor guy]

It's only 1.5 years old. Battery is dated 2/23

 

[The motor guy]

Man this AGM powersports battery is like $200 I'm thinking about welding up a battery hold down bracket that holds a regular lawn mower lead acid battery. Any reason I can't do that? Or is the alternator designed for that AGM battery?

 

[ripcord]

Man this AGM powersports battery is like $200 I'm thinking about welding up a battery hold down bracket that holds a regular lawn mower lead acid battery. Any reason I can't do that? Or is the alternator designed for that AGM battery?

What is the application? It will probably work fine with a regular lead acid battery. A charging system designed specifically for an AGM could have a peak charging voltage that is slightly lower than for a lead acid battery, but not so much that a lead acid battery won't work with it.

 

[The motor guy]

What is the application? It will probably work fine with a regular lead acid battery. A charging system designed specifically for an AGM could have a peak charging voltage that is slightly lower than for a lead acid battery, but not so much that a lead acid battery won't work with it.

A polaris side by side. With that being said, amazon has an energizer brand with the same part number for $100 I was just hoping to rob the battery out of my mower whenever I wanted to go for a spin.