Max Current Draw from AA Rechargeable Batteries for Remote Control Car

Question

Hello.
I want to assemble a battery for a remote control car based on AA rechargeable batteries.
And I have a dilemma. What is the maximum current that can be drawn from such batteries so that they do not get damaged?

Barton-wlkp · Answer

Isn't it better to think about secured 18650 cells?

viayner · Answer

Hello,
theoretically, you can take any current (depending on capacity) as long as you do not exceed the short-circuit current and you do not discharge the battery below the recommended voltage. 18650 cells, as the colleague mentioned above, will be more useful here.
For example, see http://data.energizer.com/pdfs/nh12.pdf
greetings

wojcieh007 · Answer

I thought about it, but the original battery is 9.6V and it has 8 AA rechargeable batteries.
In turn, the 18650 cells are 7.2V or 10.8V (and even 12.6V when fully charged), which is nothing like that.
The car can download up to 8A, which is not enough. I was thinking about Eneloop white batteries, but will such electricity be dangerous for them?

1 PAWEL · Answer

A fully charged 8xAA battery will get a voltage of 9.6V. 3S package 11.1V charged cells to 4.2V will get 12.6V better not to pass on LiPo 11.1V, and install for PLN 10 cut-off, low voltage alarm. For example, the 11.1V 3S 1800mAh 20C / 30C package

wojcieh007 · Answer

Original battery stops charging at 9.8V. I don't know if the voltage around 12V will not damage the car.
The 3S package is another expense, and that misses the point. AA or 18650 rechargeable batteries are more universal.

1 PAWEL · Answer

18650 You will. This can switch to LiPo 2S 7.4V after charging 8.4V. You have large C current efficiency values on the LiPo pack.

wojcieh007 · Answer

I don't want to switch to any non-standard batteries. Buying a 2S or 3S is the same as buying a second original battery.
AA or 18650 rechargeable batteries can be used for many other things. They get bored with the fun of the model, the rechargeable batteries go to the toy, camera, power bank, etc.
But will 8A current not be a killer for AA?

1 PAWEL · Answer

Surely regular AAs will not withstand continuous current.

krzysiek_krm · Answer

Hello, for example these: from documentation: shows that they have high rate discharge 7.5 A, with poverty may be enough. greetings Added after 13 [minutes]: Alternatively, consider using LiFePo4 cells, they have a lower voltage than LiIon, a fully charged 3S packet has 10.8V, only 1V difference. In AA there isn't much, in 18650 there is quite a selection. The maximum discharge current is much greater than for AA cells.

Max Current Draw from AA Rechargeable Batteries for Remote Control Car

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