He wrote about that before.
I'm not sure about tool packs having low voltage cutoff built in. When Syonyk wrote about tearing down a Dewalt 20V 6Ah pack, he said there was none.DaveG wrote: ↑Sep 17, 2015 11:08 amThis spring I decided to make our two old hybrid Giant 700c bikes into ebikes. I bought 36V 260 (low) rpm front geared wheels from Ebikeling and initially powered each bike with three 12v 9ah SLA batteries in series. We wanted to see how these inexpensive SLA batteries would perform for us as we live on the top of a big 3/4 mile hill. After running out of power several times while coming home from 15-20 mile rides, we upgraded to the safe 12v 10ah LiFePO4 Dakota Lithium batteries with BMS. Keeping the ebikes safe and simple was a top priority. We just plug in inexpensive 36v 1.5ah chargers after each ride. They automatically turn off after the batteries are charged. http://www.amazon.com/gp/product/B00U2Y ... detailpage
[...] Now our typical ride is 15-30 miles at a “smelling the roses” speed of 10-12 mph. We do pedal almost all of the time but need assistance on any hill or against the wind.
Happened to find an ebike use of the Dewalt DCB407.Internals and Interface Board
These packs contain an interface board that serves to connect the cells to the outside world. The board has the ID resistor and thermistor as well, but it is by no means a battery management system - it doesn't appear to do any balancing, and is quite simple. There's also no low voltage cutoff or overcurrent cutoff - the tool is required to handle all that.
This means that if you want to use these packs in another project, it's really easy! Just shove some terminals in and don't be stupid about your low voltage cutoff (15V is a good idea).
DeWalt DCB407 battery clears 10 miles in human transport,
Submitted by trx430ex on February 25, 2017
Trek pure trike powered by Crystalite motor in 36volt has just traveled from the campground on Jekyll island all the way to the Westin hotel 9 miles, (lunch) then south to the new youth center. with girlfriend on back a six PAC of Corona lite, (for later) goldfish and a salad we switched to #2 batt of three and went from the youth center access all the way to northern fishing pier 14 miles on the beach.
2 weddings, 1000 beach goers and a flat front drive tire in the last 5% of the ride, switching to 3rd batt to go home.almost 26 miles in one day,@ 300 pounds ~ 2 souls'200/100 in open air.
Has anyone gone any farther?
I loved these hover board batts but i have been stalking them lately and the price has gone up. Cheapest around are $50 each and most are generic cellsdocw009 wrote: ↑Mar 12, 2018 11:23 amI have the 180WH (5AH) and the 80WH (probably 2AH) Ryobi "40V" batteries. Small world. My first ebike uses a 36V 500W ebikeling geared rear motor and 22A controller. I would estimate my range at 12 miles for the 180WH model on that bike. I have gone as far as 20 miles. I believe these packs do have LVC circuits, but they will shut down at half capacity, around 36 volts, as any appreciable current creates enough voltage sag to shut off the battery.
Still, the Ryobi's are somewhat adequate for smaller motors. My ebikeling kit only uses between 6-10 WH/mile in PAS level 1 at 12 mph. They're not cost effective though. I already had a Ryobi weedwhacker with the 80WH battery and charger, about 4-5 years old. The 180WH battery cost me $120 at Home Depot. If you had to buy a charger, now you're looking at $180.
I can buy a small ebike battery with twice the capacity for not much more money, or if I want to live dangerously, I can use my $35 36V 4AH hoverboard batteries. I keep the latter in an ammo can and only charge them outside, or inside a barbeque grille.
Has this been verified? Customer service doesn't always give the answer that we need for DIY re-purposing. Often the LVC is provided by the tool rather than the battery, or by a combination of the BMS in the battery communicating with the tool. So from their perspective it is there, but if you re-purpose them into an ebike their answer may not apply.