Recent content by Firedog

Could be blown Mosfet in the controller. Troubleshooting - Learn has a guide to test if blue/green/yellow is bad. You need multimeter. I can replace any bad mosfets but it's tricky. Usually a new controller is a better solution.

Makita started selling Lithium ion batteries in 2013. The original batteries had a "charge board" that connected the battery electrically to the tool and provided some charging protection. It also prevented charging (bricked the battery) if it sensed other errors. It had no way to monitor the...

I've used tool batteries (Makita) in series for many years to power my ebike builds. The latest generation of genuine Makita batteries have a true BMS that cuts discharge if any cell drops below 3V. Makita only makes 10 cell 18V batteries (6ah max) and they are rightfully expensive. There...

Anyone considering using tool batteries to power ebikes beware of a new fraud. Old fraud is selling admitted clones that deliver 1/3 the promised capacity (AH). I've bought "genuine" Makita 6.0ah batteries on eBay for a cheap price hoping they were actually filled with expensive 3.0ah cells...

I built a Santana and a Cannondale etandem with the same new Crystalyte kits. Hard to find Crystalyte cruise control included. We love the results, but don't need 2. In San Diego. Details here: https://sandiego.craigslist.org/ssd/bik/d/bonita-electric-tandem-ebike/7588074272.html

BMS is inside the battery = Battery Management System. Perhaps those 50V caps are inside the controller which is powered by the the snow Joe 10S battery. I just modified a 80v lawn mower to run on the no ID batteries I run my ebikes and everything else that uses DC power saving the $600 cost...

https://endless-sphere.com/forums/viewtopic.php?f=14&t=68750 Thread started in 2015 about Echo 58V (14s) batteries for ebike use and attempts to power Echo equipment on ebike batteries. Good idea that would work. Use the smallest 2ah (cheapest) 80V Atlas battery (20s) to mount in the stock...

Thanks.....I didn't consider that.

The motor isn't much like a hubmotor other than being brushless with hall timing sensors and a shaft with a flat on one side. The Al cover is from my scrap bin and came from an early Heinzman brushed motor used on EV Global Lead Acid battery ebikes. It happened to be the right size to keep the...

Did you test and measure 40V 6Ah? 20 18650 (10S x 2P) cells just fit that batteries dimensions. Quality 3.0-3.4AH 10A max cells do exist but are very expensive. "Not genuine" tool batteries never deliver the capacity (AH) promised. I tried and tested dozens and 60% of promised is the...

I finished the conversion of the new Atlas 80V push mower to operate on 3 18V Makita mount batteries. I mowed over a half acre of weeds with 40% of my 9ah battery capacity remaining. I'm very happy with the results. Since I could not get the stock controller to recognize a non-Atlas...

So... no success substituting 4 18V Makita directly. I still think the center pin of the battery is probably providing a specified resistance I haven't found. Anyone who owns an Atlas 80/40v battery, please measure the resistance between the center pin and ground and report along with a rough...

Makita sold the first Li-ion tools in 2005 and followed battery tradition of labeling batteries with working voltage. So 3.7 x 5s = 18V. The others that followed did the same until Dewalt decided to label 5s as 20V. Great for marketing since who wouldn't rather have 20V over 18V for the same...

I use Makita 18V (5s) batteries to power any brand tool, ebikes and anything else needing DC power. I've replaced a heavy old gas motor on a high end front throw reel lawnmower with early Currie brushed motor (free) and it's a perfect close cut machine for bermuda. I have tons of experience...