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Anyone interested in joining a group buy on EM3EV batteries? I want one of these but I'm put off by the $245 shipping cost. However the shipping stays the same for parcels up to 20kg, so you could get 4 batteries (+ chargers) in one package. To keep down costs further anyone in the north...

**Sold**

Zero - I retired in July :-)

Yeah, you parallel three packs, then another three, then the last three and finally you series those parallel groups together:- I bulk charge via a modified Meanwell power supply. As for balancing - I've never had to rebalance since the initial balance charge - that's around 200 cycles in 18...

Hi sorry, didn't get an alert to the post. Yes it's still for sale - it's still on bike actually, but it wouldn't take long to remove it.

Hi Dimple :-)

It'll spin 15% faster, so 92rpm vs 80 rpm, still within my comfort zone - I'm ok with anything up to 100rpm..

Yes. They have 63v caps and 75v mosfets. I only charge my lipo to 4.15v per cell or 62.25v in total anyway as a safety buffer and to extend the packs life.

Ok, since retiring the commuter isn't getting much use so it's getting the MAC kit stripped off it and returned to stock. So time to have some fun with my next build:- BBS02 48v500w crank drive kit. Host bike. Going to re-use the lipos as a 15s3p 12ah (63v hot) pack. Trying to decide...

Does it look lie this? Mavic A319 rim, black spokes?

A friends "chinese special" battery took a full 36hrs to balance properly on it's first charge.

When you fitted the freewheel originally, did you also fit a new chain at the same time? If you didn't then the old chain will have worn the new freewheel and no adjustment will fix it. Only fix is a new chain and new freewheel at the same time. You can fit new chains to old...

I thought the 500W versions were 48v? But yes, you'd be pushing it on that battery. Certainly on the 48v500w BBS02's the motor and casing is larger and the whole unit about 1lb heavier as a result. I've got a 48v500w unit on the way.

Sounds about right 4 hrs work @ £40 per hour. My rate is £30 per hour, but I don't have wages or a shop to pay for ;-)

Still for sale and dropped to £325.

PM'd back - sorry for the delay.

That looks like an epic ride!

That's actually a deceptive photo - this is the framke naked:- Yeah I do - 5ft11" - but they only did the frame in med size :-( Although tbh that th seat at it's road height - I don't run it that high off road and with the motor optimum pedalling position wont be so much of an issue so I'll...

I've got a 48v500w unit coming that I'm going to run with my 15s (62.25v off charger) lipo pack. It's going on this:- I'll report back here with my experiences.

EDIT:- look like you've sorted it :-)