Will 5V- 2.1A ipad charger work for kr808 batteries?

[Numevexo]

I purchased an ipad 5.1V~2.1A AC to USB wall charger on ebay to power a 5V PT.
I currently(no pun intended) charge my kr8 batts with the 4.7V~0.08A charger that the kr808 starter kit came with.

Here's my question: Will the ipad charger charge my kr808 batts faster than the stock charger or will it damage/shorten the life of the batts because of the increased voltage/amps?
If it makes a difference, the ipad charger supposedly has an IC chip inside that switches to a saver mode to prevent overcharging of an ipad batt or in case of short circuit.

Thanks for your time.

 

[Kurt]

This is my understanding of such things, so if someone wants to correct me, please do.

I don't think the charger will "give" more than the battery "asks for". The charging circuit in the battery draws the current it needs, the charger doesn't automatically give 2.1 Amps. The charger is rated to be able to deliver up to 2.1 Amps if the device needs it, without frying or limiting the current. So my guess is your ipad charger will be fine for this and should not damage the battery. It might charge faster than with the standard kr8 charger, but only if that charger is designed to limit current requested by the device (battery). If anything the kr8 battery will charge either the same rate, or at the full rate it was designed to charge at.

Think of the device as a vacuum, pulling current it needs, not the charger as a fire hose pushing current into the device.

 

[Hoosier]

Nearly any PV battery requires a specific ampere feed at certain voltages. Typically a higher amp charger is designed for multiple cells and any PV battery I am familiar with is a single cell.

I have taken apart Joye 510 batteries and the battery includes the charge control circuitry and the charger just has some simple protection circuitry. I think this should be the typical as the charge control circuitry is combined with the discharge control circuitry. It is just a single chip and doing both with one is economical and is what is referred to as "protected". Even with me knowing the charge control circuitry is in the battery, I do not know what the design parameters are for that circuit.

Like how much current will overwhelm the controller, or, more likely, over heat it? Which will cut off the feed first, the charger's protection circuitry, or the battery's controller? Given the amount of energy stored in a typical Li-ion battery, I do know I would really hate for that energy to be released in an uncontrolled manner. (Read "uncontrolled" as "goes boom".)

So, it may work fine. The battery's control and protection circuitry may be quite happy with the different charger's output. Or it may damage the charge control circuitry over time with heat. But it will not charge the battery quicker in any significant way just as Kurt says.