How to replace Lagenda b231 balloon pump battery

How to replace Lagenda b231 balloon pump battery

You can do a search for "12V Battery 3S2P 11.1V /12.6V 5000mAh 18650 Lithium-ion Battery Pack" on Aliexpress and buy a battery of any size. Keep in mind that the original has 9 battery cells inside. So don't buy anything bigger.

The smaller battery I bought. Keep in mind that a smaller battery will result in a shorter run time.
https://www.aliexpress.com/item/33055...

The original size- My friend bought this and says it's working for him. I haven't tested this one personally.
https://www.aliexpress.com/item/32823...

4/23/24 update
Smaller mAH batteries will work. However if it's low on juice and you try a thick 160. It may shut off the pump. You just have to restart it. This can be annoying when on the job. Best to get a a higher mAH. Be care of a super thick pack or else it won't fit inside.

This is the one I'm currently using.
https://www.aliexpress.us/item/325680...

Good Luck!