Latest Project Finished -Nearly

saneagle

Esteemed Pedelecer
Oct 10, 2010
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4,159
Telford
Update:

The 36v battery came from PSWPower today. I'm not having much luck these days, dispite the fact that I'm helpig plenty of old ladies across the road. Unfortunately, this battery is slightly different to the last one they sent me. I can still use it, but I can't just insert it to get the dual voltage solution I'd hoped for, which I would have got if they sent me the same as the last one.

Although it's similar, it has many differences. 1. The connector is 4 pin instead of 5 pin; 2. The positive and negative are reversed (lucky I checked with a meter); 3 The outer case of the old one is too short for the insertion length of the new one; 4. The reciever of the new one has fixings that are further apart in the fore and aft direction.

All is not lost, as you'll see later.

This is a very cheap battery for £89, including a decent charger. It would be easy to fit it to any standard rack if you have basic DIY abilities. You could even make your own custom rack out of plywood and Wickes aluminium tube, like I showed about 12 years ago.

This is the battery 36v 10.4Ah 40 cell:
64221

I have an empty case from the faulty battery that was replaced when I ordered last time. You can see that its overall length is exactly the same as the new one, it's inserted length is the same as the shorter 24v one but shorter than the new 36v one. This photo shows what I mean. The empty 36v one is on the left:
64222

One solution would be to chuck the 24v one and bolt the new receiver into the rack. The front fixings line up exactly, but the rear two overlap the rack at the back, which I could fix with two adapter strips, which would be a short length of 2.5mm steel with two holes in - one for the receiver and one for the rack.

The astute ones amongst you would have figured out a simpler solution, which will give me what I want. I'm going to open the case, remove the contents and fit them into the empty case, then I have two batteries that I can insert into the present receiver, like I'd hoped for. Let's see how that goes.
 
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