[miay]

I am considering buything this 27,000 mah battery which is also 36v, like the standard M365 battery: 36v, ~27,000 mah battery. https://www.aliexpress.com/item/4000715032802.html

- Since they are the same voltage, plugging the bigger battery in, in place of the small battery, should work as normal, right?

I am planning on storing that old battery in case the new one dies. Then I will put the new, bigger battery in a waterproof fanny pack, zip tie it to the front floor or stem, and hopefully enjoy 3 times the range.

Any feedback or tweaks to make the plan work are welcome, thanks.

[Daniel blag]

There are 3 cables (white yellow green i think) that connects to the original controller from original battary, i am pretty sure that if you connect different battery to original controller you will have problems, and you will need a new controller.

[IamPurple]

27Ah? Definitely not real.

[JonDon]

like the standard M365 battery: 36v, ~27,000 mah battery. https://www.aliexpress.com/item/4000715032802.html

This is a 10S2P battery, the original battery is a 10s3p battery pack. So this is only 2/3 of the original capacity if the cells are about the same capacity. But usually Chinese cells are quite bad, so I wouldn't bet on that.

- Since they are the same voltage, plugging the bigger battery in, in place of the small battery, should work as normal, right?

The ESC (controller) needs to communicate with the M365 BMS (battery controller).
So you can either disassemble the original battery to get the BMS, buy an original M365 BMS or connect the additional battery pack in parallel with the original battery.

Here is a good guide how to connect an additional battery.

[Teslaguy]

Try using a Bird one battery!

[Marte]

like the standard M365 battery: 36v, ~27,000 mah battery. https://www.aliexpress.com/item/4000715032802.html

This is a 10S2P battery, the original battery is a 10s3p battery pack. So this is only 2/3 of the original capacity if the cells are about the same capacity. But usually Chinese cells are quite bad, so I wouldn't bet on that.

- Since they are the same voltage, plugging the bigger battery in, in place of the small battery, should work as normal, right?

The ESC (controller) needs to communicate with the M365 BMS (battery controller).
So you can either disassemble the original battery to get the BMS, buy an original M365 BMS or connect the additional battery pack in parallel with the original battery.

Here is a good guide how to connect an additional battery.

But, if I use another battery pack 36V, connect only the two power cables (red & black) with the same two from the original battery, I spouse the scooter will works fine, right?
Of course, I should remove and charge the extra battery outside, but the autonomy will increase without problems to the motor controller (from his side, he dont know, only receive 36-42V with the request current).

I think correct?