# battery charger

Started by July 19, 2021
```I picked up a AAA NiMh battery charger.
Output: 1.2 V   800 mA
AA/AAA charging: 120 mA

Why the two different current specs?
Does not compute -

--
Rich
```
```On 2021/07/19 4:54 p.m., RichD wrote:
> I picked up a AAA NiMh battery charger.
> Output: 1.2 V   800 mA
> AA/AAA charging: 120 mA
>
> Why the two different current specs?
> Does not compute -
>

Smaller batteries overheat more easily...

John :-#)#
```
```On Monday, July 19, 2021 at 4:54:41 PM UTC-7, RichD wrote:
> I picked up a AAA NiMh battery charger.
> Output: 1.2 V 800 mA
> AA/AAA charging: 120 mA
>
> Why the two different current specs?
> Does not compute -

If the power output is at 1.2V, it's charging cells in parallel.
If it delivers 800 mA into a 1.2V load, that's  good for six cells in parallel?
The 120 mA could be a per-cell  limit, or into a 1.4V -1.6V load (fully-charged cell)
```
``` RichDope wrote:
=================
> I picked up a AAA NiMh battery charger.
> Output: 1.2 V 800 mA
> AA/AAA charging: 120 mA
>
> Why the two different current specs?
> Does not compute -

** Printing error  -  dummy.

The first spec is for intended cell type.

.....  Phil
```
```On 7/19/2021 6:54 PM, RichD wrote:
> I picked up a AAA NiMh battery charger.
> Output: 1.2 V   800 mA
> AA/AAA charging: 120 mA
>
> Why the two different current specs?
> Does not compute -
>

Just guessing that the 1.2V 800mA is the battery rating and the 120mA is
the charging current.
```
```On 2021-07-19, RichD <r_delaney2001@yahoo.com> wrote:
> I picked up a AAA NiMh battery charger.