Batttery Pack is Greenpow 4x4 / 3A 3300MAH 4.8v
Nimh

Can i build my own using 4 of these?
Thanks, Gary
Sorry the photo is upside down.

 

At what voltage is that thing working at?

 

The battery pack reads 4.8v.

There are four cells connected together in a green plastic cover that reads:
Greenpow 4x4 / 3A 3300MAH 4.8v Nimh
However, the charger for the thing shows an output of 11 + volts, when I put my meter on it.

My initial concern was the 3300 mah (original), vs 2500 mah as seen in the Ebay photo (of a single cell).
The Ebay cells (photo) are $1.00 each.
A comperable battery pack to the original is about $16.00

My understanding is that lower mah, will cause the batteries to drain quicker.
But if 2500 mah will power the LED,s even for 30-40 minutes, that should meet my needs.

Thanks for the reply

Gary

 

You'll be OK but your 2500mAh batteries will only last for approximately 70% of the time of your 3300mAh batteries.

The 11V ia a little worrying as NiMH batteries are best charged at 1.4~1.6V per cell which equates to 5.6~6.4V in total but I presume your measured voltage is with no batteries connected?

 

Paul,

Correct, I measured it with no batteries connected.
70% will be fine for my hobbiest application.


Thanks for the feedback.

Gary