Ordered my 48V TSDZ2…. Now for the battery?

[Ducky77]

Hi all! i Bought a used townie off Craigslist for $100! Its a full custom project! Paint and all! We’ll see how it goes , lol!
I just ordered my tongsheng motor from PSWPower for a great price.
Now I need to get a battery.
We are probably going to put the battery in a custom made basket on the rear cargo rack. I was also looking at Pedaluma’s bottle setup.
I’m not going to be doing marathon rides … I can’t imagine doing more than 25 miles?
I need a 48V battery.
What amp hours should I be looking for?
price and weight are a consideration.
if I go with a battery for the rear rack, something that is flat would be preferred but not mandatory.
Pedaluma… your bikes are awesome! My husband is going to try and hide the wires like you do! where Do you get your bottle batteries? Would they work for my set up?

 

[SamN44]

If you're going to put the battery in the basket or a rear bag, this one fits perfectly on my bike as an extended battery. I combined it with the stock battery for a total of 30ah. The bottle batteries look great, but I've found with an ebike that I want to ride a lot further than I originally thought I would. Maybe use a bottle battery as the main battery and wire a removable aux battery in the basket or rear bag.

EBike Lithium ion Battery 48V 20AH ≤1500W E Bike Scooter Electric Bicycle Motor 791319289230 | eBay

Battery Specifications: ✅Brand: CAO MM ✅Battery Voltage: 48Volt ✅Battery Capacity: 20Ah/20000mAh ✅Combination: 13s7p(7-parallel 13-series) ✅BMS: 13S 35Amp ✅Continue Discharge Current: 35Amp ✅Peak Discharge Current: 100Amp ✅Fit ebike: 200W/250W/300W/350W/400W/450W/480W/500W/750W/1000W/1200W/1500W...

www.ebay.com

 

[PedalUma]

@Ducky77,
Sounds like a fun project. If the Townie is a single speed you will want to add gears to take advantage of the mid-drive. I do not talk about my suppliers. Those relationships have taken years to develop and the cost of tuition was very high in the form of mistakes. Here is a townie that I made electric. I hope it gives you some inspiration. Look at the wires and connectors on the handlebar. This battery will do a good 60 miles. Is your butt really going to want to ride for three hours? Keep all added weight low and to the center of the bike. Rack packs will flip a bike on tight corners.

 

[EMGX]

I've had good luck with using this one on a bike with a 48v 750w TSDZ2. $160, relatively small and light weight.
I put in a good amount of effort and don't use a throttle, this battery supports my rides over 50 miles on hilly routes.

 

[Ducky77]

I've had good luck with using this one on a bike with a 48v 750w TSDZ2. $160, relatively small and light weight.
I put in a good amount of effort and don't use a throttle, this battery supports my rides over 50 miles on hilly routes.

View attachment 112226View attachment 112227View attachment 112228

This looks great! Where can I find this battery? Thank you!!!

 

[Ducky77]

@Ducky77,
Sounds like a fun project. If the Townie is a single speed you will want to add gears to take advantage of the mid-drive. I do not talk about my suppliers. Those relationships have taken years to develop and the cost of tuition was very high in the form of mistakes. Here is a townie that I made electric. I hope it gives you some inspiration. Look at the wires and connectors on the handlebar. This battery will do a good 60 miles. Is your butt really going to want to ride for three hours? Keep all added weight low and to the center of the bike. Rack packs will flip a bike on tight corners.
View attachment 112217

Very cool! I have a step through townie 7 gear. I will share photos when it is finished!

 

[EMGX]

This looks great! Where can I find this battery? Thank you!!!

Amazon.

 

[PedalUma]

Amazon.

I just went to eBay to look at options for you. IMO, get one that mounts on the downtube or seat tube. Use three Topeak Versa Mounts. Get one that has a mounting plate, a sealed case, is easily removable, has an On/Off switch and USB port. The quality of the cells is everything. Good wine only starts with good grapes. Because your downtube curves, spacers can adjust for this. Get the lightest battery that you can afford. The 13Ah ones will be fine. 48Vx13=624Wh. At an average draw of 200W you can ride for three-hours. At 18Mph, that is 54 miles. That will be about four times longer than 90% of your rides.
Why having a USB port is a safety feature: You can slowly and safely discharge the battery by using a USB fan.

 

[EMGX]

Battery and battery placement is the hard part. So far I have preferred to use frame bags when possible. On this bike I have a 48v 10ah battery in a MOLLE water bottle holder as a handlebar mount. Around 6.5# including the bag and there is an attached zippered storage pouch for other stuff. Definitely not perfect but what I could come up with.

 

[PedalUma]

@m@Robertson, I just had the weirdest TS problem. The bike was lurching and the spedo would show 62.4 Mph. WTF! What it was is that I double stacked wheel magnets to get it close enough to the pickup. This made the signal too strong.