Hailian industrial cells, nicad? - RC Groups
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Feb 23, 2007, 09:07 AM
An itch?. Scratch build.
eflightray's Avatar

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?
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Feb 23, 2007, 09:27 AM
Registered User
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, 10:26 AM
Registered User
dave morris's Avatar
some kind of lead acid cell, didn't gates have something like that?

hmm that does not make since, never mind
Feb 23, 2007, 04:11 PM
An itch?. Scratch build.
eflightray's Avatar

Having switched both sides of my brain on, and a sudden "Doh!, you dumbo".

Yes there are two more cells in the upper section.
Feb 23, 2007, 04:47 PM
Master of 1 point landing
Originally Posted by eflightray

Having switched both sides of my brain on, and a sudden "Doh!, you dumbo".

Yes there are two more cells in the upper section.
LOL! had to be there somewhere!

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