Conversion

[geezee74]

Hi, I am looking to convert my first electric bike. I want a bottle style battery with a twist throttle. I would like it to be as powerful as possible. If anyone has any recommendations they would be much appreciated.

 

[Deleted member 4366]

By "powerful", do you mean fast or good at climbing hills?

 

[geezee74]

Hi, both if poss.

 

[banbury frank]

Hi We can supply a 48 volt in frame Kube Battery powerd Kit 2,000 watts


Frank

 

[103Alex1]

2,000 watts

....

 

[banbury frank]

Hi Alex yes that's our new kit 2,000 watts nominal peak at 2,500

Frank

 

[103Alex1]

Outrageous .. hope it's got a big enough battery to get to the end of the road & back

 

[geezee74]

Thank you for your help Frank. However, I want to fit a 'bottle style' battery.

 

[Deleted member 4366]

Hi, I am looking to convert my first electric bike. I want a bottle style battery with a twist throttle. I would like it to be as powerful as possible. If anyone has any recommendations they would be much appreciated.

Most bottle batteries aren't powerful enough for a powerful motor. There's a 6aH one that can give 30 amps, but obviously it won't get you far: 30 amps will last 12 minutes.

Life's not so easy is it?

 

[jackhandy]

Most bottle batteries aren't powerful enough for a powerful motor. There's a 6aH one that can give 30 amps, but obviously it won't get you far: 30 amps will last 12 minutes.

Life's not so easy is it?

What are the 11ah ones with samsung cells like for sag under load?

Anyone know?

 

[Deleted member 4366]

What are the 11ah ones with samsung cells like for sag under load?

Anyone know?

The 8.8ah batteries use the ICR18650-22A cells. The -22A means 2200 maH. Therefore the 11aH battery must have the ICR18650-28A cells in it and the 10AH one the -26A. The higher discharge rate cells are the INR18650 cells, but they have less capacity, which is why you only get 6aH for the same size.

The 8.8aH ICR18650-22A ones that I tried sagged quite a lot with a 14 amp controller on a cold day, although the datasheet shows a sag of 0.3v per cell at 2C, which would be 1.2v sag at about 17 amps for the pack. A test result for the 2800maH ones shows 0.4v sag per cell at 5A, which would be 1.6v sag at 20A for the pack.

 

[geezee74]

Thank's d8veh, due to vanity and having another electric bike with a crappy conversion which has the batteries over the back wheel, I really wanted to put a 'oxydrive' style battery onto a carbon framed bike. However, the giant bike you converted d8evh looks pretty tidy. I have been on the em3ev site and contacted him but I am pretty rubbish with electrics and would love something that is almost plug and play. Do you have any further suggestions.

 

[Deleted member 4366]

Frank's Xipi kits are more or less plug and play if your budget stretches that far. The Ezee kits are also very good and quite powerful. The motor is very strong and can give a lot more than what the standard kit's set for. Maybe if you called Cyclezee on the phone, he can help you with a bit more torque. I know the Americans have the same kit set to 20mph and much higher current. Next is the Oxygen kit. I have one myself and it was easy to fit. I wrote a review thread about it somewhere and so did Geoff9 if you do a search. The Oxydrive speed limit can be reset to 24 mph via settings in the display; which is great on the flat with a following wind, but don't expect it to power up hills at that speed. It's still only a 250w motor, so will slow down on hills and into strong winds, but it'll out-power your average 250w Chinese bike.

One last thing: Kudos tried a bottle battery on a carbon framed bike and had problems with the studs pulling out. It can be done, but not by simply bolting your battery to the bottle fixings. You'd need to do a bit of reinforcing.

 

[geezee74]

Great. Cheers, d8eve.