A 10 pound cranking battery? Wow!

Life Force worked great on the airboat

Tuner car guys will love this battery for weight alone.

I need a lightweight car battery too

Bass boat owners rejoice

My 12x10e18 HP DumpTruck Cell Phone Accessory loves this battery. Get one, Today, (if you have a similar device as mine, simulated -not financial advice)

Interesting concept if you need a battery to just start an engine only or have the critical need for a light weight battery. 8AH per cell equating to 24AH in combined total isnt much when comparing to the 95AH rating on that value craft battery of roughly the same size. I'd much rather have the standard lead acid battery with the additional 71AH reserve capacity using your battery examples. I would be much more confident in key on engine off power consumption scenarios knowing theres a much more substantial reserve left in the battery. Im sure the need is out there somewhere, just likely not for the average consumer.

I'd buy that for £10! I'm guessing you want money for shipping to the UK tho?

what about long range high amp hour for a trolling motor?

It cranks my 6.2 L Chevy engine very easily

Are they for sale or are you going to show us how you built it?

Your website shows these are pre-order only. Commenters have stated that they work great in their respective use cases. Not sure how that works. What is the battery chemistry?

how do you charge it if its dead? Is the hinge plastic?

How much ?

Every vehicle and boat I have when it's running has a voltage of 14.6 volts. Those three cells you got there are most likely lithium. each lithium cell has a Max voltage of 4.2 volts That would give you a maximum voltage of 12.6. How does your battery deal with that extra voltage? Shut off? if so that is extremely bad for the alternator You disconnect your battery while the engines are running on a newer vehicle that usually ends up in your alternator letting out some magic smoke. I made a lithium-iron phosphate battery. That's half the weight of the original. It's about 23 lbs. And it's double the capacity. So instead of being roughly 50 amp hours, it's a little over 105 in the same size, I think that's what people really want. It's more runtime, not just cranking power. Turn your radio on for few minutes while someone goes to the store and your car is not running. You have a dead battery quick. When you put cells in series like that the cranking power does not Stack it's the rating of 1 cell. The voltage stacks. In order to have 2700 cranking amps you have to have 3 in series and three in parallel. Lithium ion is a bad replacement for 12 Volt battery. Voltages don't match up. In order to do 12 Volt battery you have to go to lithium iron phosphate. Then you have 3.65 volts. Fully charged per cell and you use four of those, which puts you in the sweet spot of 14.6 volts. Just saying there is a reason lithium-ion are not on the shelf at walmart, Because when you overcharge those. They're not happy. They tend to, let out a-lot of heat and eventually flame due to thermal runaway. And now you wanna put a heat sensitive Battery under the hood of your car where it's nice and warm. Companies spend millions and millions of dollars on research and development I would stick with that.

How does it do in freezing winter temperatures? 😂😂😂

You're not an inventor. You're a box maker. You made a box

Use caution before getting this battery. These batteries...we also use in hobby grade RC products such as...helicopters, boats, cars, and airplanes. They absolutely suck ass. Lipo, lion or graphene are a much better power per dollar.

Are they made in China?😵‍💫