I am currently using 2 different batteries on my Nano Brompton - 36v Li Po 7 Ah and a 36 v Li Ion 2.6Ah (Bosch powertool battery). I currently use one or the other but am considering using both together on longer runs and also considering using 2 Bosch batteries wired in parallel. The Bosch batteries recharge from empty to full in around 40 mins. A single battery gets me to work and back and weighs just over 1kg. Sometimes carrying a spare would be useful in case I want to take a detour. Yes I could stop and switch them over but I would rather have them both installed together just in case.
I do not intend to alter the batteries or their circuitry because of potential charging issues but understand from suggestions some have allready made (many thanks) that I need to use Schottky Barrier Rectifiers so the batteries cannot discharge into each other. I therefore intend to incorporate these components into either the wiring or the battery holders and would be grateful for views on whether the wiring diargram below is correct or whether I am likelyto fry everything in sight. Does it matter which way round I connect to the outer terminals on the rectifiers. What's the middle terminal for?
By building the rectifiers into the battery holders or wiring I want the flexibility to run with just one battery or 2
Another alternative I guess we would be a switch to switch from one battery to the other. Would this need to be double pole? Can anyone recommend a switch for this purpose? Any help or suggestions would be very much appreciated.
Francis
I do not intend to alter the batteries or their circuitry because of potential charging issues but understand from suggestions some have allready made (many thanks) that I need to use Schottky Barrier Rectifiers so the batteries cannot discharge into each other. I therefore intend to incorporate these components into either the wiring or the battery holders and would be grateful for views on whether the wiring diargram below is correct or whether I am likelyto fry everything in sight. Does it matter which way round I connect to the outer terminals on the rectifiers. What's the middle terminal for?
By building the rectifiers into the battery holders or wiring I want the flexibility to run with just one battery or 2
Another alternative I guess we would be a switch to switch from one battery to the other. Would this need to be double pole? Can anyone recommend a switch for this purpose? Any help or suggestions would be very much appreciated.
Francis
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