|Feb 23, 2007, 08:07 AM|
Hailian industrial cells, nicad?
Hi, I've just purchased a very cheap rechargeable drill, (local big supermarket T...o UK). The drill is classed as a 9.6v and as I had destroyed my old one, and it was a silly price, (under £5), I couldn't resist.
Now being the nosey type and having used nicad/nimh for many years I also couldn't resist undoing the screws for a peep inside the battery box.
It felt rather light I was expecting a little pack of AA size cells, but no, a pack of sub C's stared back.
But then, hold on, one...two....three........six cells, now for 9.6v I was expecting eight cells. Ah! so that's why it's so cheap.
Out comes the trusty DVM, on goes the probes, 10.8v says the display.
Hmmm, 10.8v divided by 6 cells equalls 1.8v per cell, never come across that before. The pack was freshly charged, but I did have a play with the drill, perhaps 30 seconds of drilling and screwing.
I can't read what the cells are, all glued together, but I could see the name Hailian and HL. A quick search comes up with the usual China, and tool manufacturer.
So, any comments on the 1,8v per cell?
|Feb 23, 2007, 08:27 AM|
Glasgow, Great Britain (UK)
Joined Sep 2004
A little odd.
10.8V sounds about right for a almost charged 8 cell 9.6V pack (so it is correctly marked)
but only 6 cells! Are you sure there is not another couple of cells hidden away somewhere?
How are the cells aranged? are they in a paper tubes (and of an odd size resulting in the miscount??) Is it a removable pack - and they have hidden the other 2 up in the connector piece of the pack box??
Can you get your DVM onto a single cell and get the individual cell voltage?
Please post some pics if you can.
I doubt they would go to the trouble of some odd obscure cell for such a cheap product -- £5 - heck you can't even buy an rx pack for that these day (and if you can you certainly wouldnt have enough change left over for a poke of chips and your busfare home................)
|Feb 23, 2007, 03:47 PM|
Joined Jul 2005
|Category||Thread||Thread Starter||Forum||Replies||Last Post|
|fs: GMVis Commander Charger / Discharger 1-30 cells (nicad, nimh & li-ion / li-poly)||Auger||Aircraft - Electric - Airplanes (FS/W)||2||Jan 07, 2004 12:01 PM|