I want to assemble a battery for a BT speaker myself

Question

Electronics

Given: BT-column, the battery is not childishly buggy (already the second). In short: after a month, the charge literally holds 5-15 minutes. Batteries are also not childish. I decided to assemble it myself, perhaps with a larger capacity and a different type of battery. There is only this inscription on the battery (the manufacturer does not say anything about the battery anywhere):



There are 6 barrels in the battery (3 in a row). Decipher - what does it mean? What type of battery? Is it possible to change the type? Is it possible to get more capacious?

Answer 1

Battery voltage 7.2V, capacity 2000mAh. Six elements in series, each 1.2V means it is NiCd or NiMH (they are interchangeable). You can collect from finger batteries.
It would be possible to plug Li-Ion, 2 cans (it will also turn out 7.2V), but regular charging will not be able to charge it normally, there is almost a 100% chance to kill the battery in this way.
PS: Or maybe it's not about batteries, but about charging? Maybe they just don't charge?

Answer 2

And what difference does it make to the device, from what type of battery it is powered? Current he and in Africa current. Here to charge yes, you must consider the type. Or are there significant differences?

Answer 3

Judging by the voltage (and appearance) - these are three NiMH batteries connected in series (2.4V * 3). But you have six of them, which means they are connected in pairs (in parallel) to increase the total capacity. You can replace it with a larger capacity, you can assemble it yourself. You can’t determine the dimensions from the photo - I have the same battery in the radiotelephone, but there are 3 AAA size elements.
You cannot change the type (except perhaps to NiCd, but this is essentially a downgrade).