We have a small ride/drive car for the grandkids, it has a 6F/W7 or 12V7AH/20HR lead acid battery that came with it, and it's starting to wear out, we see slower speeds, short runs.

Looking at a replacement on Amazon finding 12V7.2AH which looks to be the same thing.

Wondering if there is an alternative battery that I could put in that would deliver more run time or power (speed, it's pretty slow) not quite walking speed for an adult.

Could I replace the 12v7AH like a 12V/9AH, would that give more run time, and could it be substituted for the 7AH

Do we need to raise the V rating and would it be safe to go to an 18V battery would that increase speed.

Link to Battery

Link to Lithium


Lithium is available, more charges, less weight (4 pounds) but we'd have to buy a new charger.

Any SF electrical engine wizards that know whats possible to do?

There is no problem raising the capacity of the battery (higher Amp/Hrs)with the same voltage. This will just give you longer run time.
Different chemistry, same voltage also should be okay.

Raising the voltage is another story. It MAY work, but it also may cause a fire.

Yep, Pete has it right above. Want more time? Go for the biggest amp Hour (aH) you can (that has the same dimensions as your old battery). Match the voltage though (in your case 12 Volt).

Also, a good charge schedule will help your new battery go a lot longer.

Good luck!

Yes you can go to a bigger battery that has more Amp-Hours however you have to make sure that the battery can fit in the space you have now. God Bless !!!

More amp hours, same voltage. Square them away with that.

Then…

Find another kid car. Find a bigger electric motor with far more power. Find bigger battery with lots more amp hours. Start a project of building the kids a performance car. So they can learn to drift, or drag race. Plus, you get a kick ass project out of the deal.

https://www.amazon.com/Brushle...rd_i=B07KR2YJ1K&th=1

My son has an electric Jeep for the kids. I just donated all my Rigid tools to him. He converted it to 18 volt. He bought a kit to do it. Must be a transformer of some sort. That Jeep is a screamer! At least for a 2 and 5 year old.

You didn't mention the age or size of the kids but keep in mind they will outgrow this one.
Also, if you haven't already, be sure they have a helmet and wear them.

My Grand Nieces Daddy did a bit of work on Yaya's Jeep. As in a more powerful motor and two lithium ion batteries. It will now cruise at a slow jog and run over 3 miles before needing a charge. BTW, Yaya's parents are both triathletes and at 4 1/2 years old that little girl can sprint with perfect form and is a lot faster than most 6 or 7 year olds.

Before you know it Stickman will have your grandkids on an electric motor bike...

quote:

Originally posted by Beancooker:
More amp hours, same voltage. Square them away with that.

Then…

Find another kid car. Find a bigger electric motor with far more power. Find bigger battery with lots more amp hours. Start a project of building the kids a performance car. So they can learn to drift, or drag race. Plus, you get a kick ass project out of the deal.

https://www.amazon.com/Brushle...rd_i=B07KR2YJ1K&th=1

I don't need the grandkids outrunning my golf cart!

Plenty of room under the seat for a 12v9ah and perhaps a 12AH. That would give more drive time which is a plus, for now probably order a 9ah or 12ah as a replacement.

Been watching uToob and there are several videos on modifications using 18v or 20v small tool batteries, you can get a kit to mount under the seat/hood, and then use an 18V rechargeable drill/tool battery.

Go with lithium, it will have twice the run time on about the same AH rating because lithium doesn't lose voltage when it discharges like lead acid batteries do. Lithium can also be run down to 10% charge without long term damage, unlike lead acid does when you go below 50%