The battery of the power bank was originally 2800 mAn, but now it can be replaced with 4 9800 mAn ba

Power bank. The battery was originally 2800mah, now it is to be replaced with 4 9800mah cells, if the voltage is the same and the volume can also be accommodated, then the replacement is possible.

It is possible to replace a small-capacity battery with a large-capacity battery, but it is necessary to pay attention to how big the volume of 4 9800 man is, the capacity is so large, the volume will definitely increase, in addition, the capacity is increased, the allowable current of the charging interface is limited, and the charging time will be greatly increased. If it takes dozens of hours to fill up, it is too urgent.

Of course, no, because the protection circuit is already defined when the circuit is designed. If you exceed it, you can't protect it. And there will be ** dangers.

No, the original lithium battery protection circuit does not match, there is a danger.

Note that the battery voltage is the same as the original battery. But pay attention: cylindrical 18650 lithium battery, the maximum capacity is only 3400, the maximum capacity of 21700 lithium battery is 5000, and the small size cylindrical battery is not 9800, beware of being deceived.

It is okay to have the same voltage, internal resistance and batch, what is the 4 9800mAh cells? 18650 lithium battery manufacturers.

Can't change it casually, the current difference is too big 2800m now for 9800, you have to test the filter, the power bank protection control board will not be able to withstand it? , high current?.

As long as it can be put in, the main control board support can be replaced.

You don't have a numerical value plus unit is correct, how can you tell? Let's read and write clearly.

10400 mAh is the capacity of the power bank, the power bank can charge the mobile phone several times is also related to the capacity of the mobile phone battery. The capacity of the power bank is multiplied by the conversion rate of 75 percent, and then divided by the capacity of the mobile phone battery, which is the number of charging times, and the 10400 mAh power bank can fully charge the Apple mobile phone more than 5 times.

This should be calculated according to the output size of the charger, if the output of the charger is 1A, it will take about 7 and a half hours, calculate it yourself!