may be you can try on it and share here.

worst case, it melts your plastic case, explosion may be?
remember don't connect in reverse polarity, that is the most important.

but you will need spot weld too.

what is li-on? full name ?

oh. lithium-ion i know, li-on i don't know.
lithium-ion is more common name.

lithium polymer is actually more flexible and can shape in any size, can be made as thin as 1mm.

li-po is lighter because it din't use cylindrical, it use flexible foil type case, and this causes it less durable.

cheap tablet definitely using cheap quality battery, you can see in those powerbank.
So you want to replace the battery by yourself ?

i not sure about that, but how are you going to buy the right dimension of battery that fit into your tablet ?

ya. if it is 18650 or other standard size then it is easy to replace.
Powerbank is a better choice, but it is less convenient to bring.

yea. i will try on my own first.
some allow mix with different battery, but some just parallel those battery and then conversion to 5V.
those with parallel type should use the same type of battery and with nearest internal resistance.

those 4000mAh are over rated. the maximum capacity right now is 3400mAh manufactured by panasonic.
so those with unknown brand and claim their battery capacity more than 3000mAh, mostly are fake.

recommended brand for battery: panasonic, sanyo, or samsung.

those 4000mAh are over rated. the maximum capacity right now is 3400mAh manufactured by panasonic.
so those with unknown brand and claim their battery capacity more than 3000mAh, mostly are fake.

recommended brand for battery: panasonic, sanyo, or samsung.

erm. since i haven't bought before from local shop, so i can't recommend any seller here.
may be other lyn members can help you about this.

using 1 piece battery, why not consider buying 1 more extra battery for phone ?

good reason. haha
i think at least 2 cell enough for use. iphone still ok, but ipad has very high capacity.
American brand should be expensive right?
But i will try for 2 changeable cell powerbank first.

calculation can't indicate the actual capacity.
(3.7/5) x (13000) x (75%) = 7215mAh

7215mAh/ 3100 = 2.3 times

75% efficiency i think is because of large current drawn which reduce the efficiency.

RMB280 is quite expensive compared to Pineng.

yes very confirm. it is the same type as shown in above picture from joytest.
but it written 2800mAh for each cell.

it is impossible to label lower capacity because it can't produce the higher output as measured.

it is not possible to label the larger capacity because it is not look those over rated 30000mAh, where actual capacity is far less than half of it.

see to believe.

should be no problem for that. i had bought sanyo 2800mAh cell and plan to replace the notebook cells.
but the measured result shows the capacity is much lower than expected. may be just like the seller says that it needs 4.35V charger to fully charge it. Now plan to buy the cell with 2600mAh with required 4.2V to fully charge it.

i bought from the same seller. 1 type is powerbank with changeable 18650 cells and another one is universal charger for Li-ion and NiMH battery, when it fully charged it shows the time required and capacity of the cell.

No need separately charge. The housing of the notebook cells containing the charging circuit, just plug into notebook to charge it. I don't know whether it is necessary to erase the data in the EEPROM or not, it stores the information of the battery.