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A massive game changing EV charging station for your home, Siemens has come up with an agreement to build an EV charging station that takes 15 minutes to install, and does not require any modifications to the house wiring. Basically they can take off the meter, plug in the charger, put the meter...

Am installing a 36V 60 amp Daly BMS 10s on a freighter tadpole trike, the maximum load will be 30 amps at between 41 and 38 volts or 1200 watts max for very short bursts only at startup and on hills. How much temperature rise to I need to allow for the BMS, it will be fixed to the floor of the...

Am using Nissan Leaf Modules to power my etractor and a freighter trike, 5 modules in series makes a very good 36V battery, 36 volt chargers run up to 42 volts, I stop charging at 40 volts to preserve the modules, and ebike controllers are happy between 42 and 32 volts +/-. Lots of ebikes these...

So many questions, so can I run two hub motors in parallel, on one controller, & 1 throttle potentiometer, given a controller that will deliver the amps, (battery power not a problem)?. If I use brushed motors, they will work for cornering, the motor on the inside will slow and the outside will...

Brought home a non working ebike today, got a sweet heart deal. first thing hot wired the hub motor (2 wire) and it ran fine. Then started chasing problems and found the key on/off switch was faulty, Has two large red wires, so jumped them & rode the bike around the block. Also has two smaller...

Have a 10s (5 leaf modules) and a 10s 2p (10 leaf modules) batteries that I want to run between 38 and 40 volts. Have set my charge controller and/or power supply at 41 volts and they are taking a long time to bring the battery packs up to 40 V, in fact I usually wind up using them before they...

My garden tractor has two electrical systems a 40V which operates the traction motor, and a 12v system which operates the forklift and possibly other additions. So it has been my practice to use the tractor chassis as the ground, I just run a positive lead to anyplace I need power, and connect...

The title says it all: The BMS will not accept power from the PV panels if the batteries are fully charged, so why complicate things?

On some pictures of parallel connections, there are bus bars on the center tap of the modules, on some there are not, could someone explain the difference/reasons? Thanks in advance, Tony.

I read here about balancing cells before assembling the pack, since the BMS has balancing capabilities is this step needed and why?. Managed to disassemble the Leaf battery without a single spark, then wiring up a test 40 v pack to test on my tractor I managed to do a little welding with a...

Have 6 or so leaf modules I would like to sell, they are gen 1, they came out of a full battery and almost every one showed 8.11 volts. Am offering 6, but if you have an interesting project, might go as high as 10. I can deliver a minimum of 4 modules in BC Canada in the region known as the...

Please bear with questions from a first time BMS buyer. Am planning on 5 leaf modules in series with 2 sets parallel for 40 V +/-. That is the best layout for the battery box. Reason for 40 volts is that the motor and controller are nominal 36v from the days when every thing was L/A batts. So...

To build a pack for 36 or 72 volt use, for golf cart or ebike, is it best to build series packs, then parallel connect, or is it best to build parallel groups then series connect the groups? Lets say a pack of 10 in series, with 2 groups wired in parallel or a pack of 2 parallel wired into a10...

Have a small supply of 80 Volt greenworks batteries, want to use one to power a freighter bike, plan to use a PM Brushed motor of about 1200 watts at 80 volts. Any recommendations for a speed controller. Would expect it to be PWM based, but cannot find any suitable candidates. Suggestions &...

It's an E-tractor the motor has died (24 volt series wound golf cart motor) after serving us well for 10 years. It is almost impossible to find another used motor out of a golf cart or equal because the newer ones all bolt up to the differential thus do not need a bearing on the output end, the...

Am planning an 80 volt +/- leaf battery build to replace the Lead Acid batteries on my EV garden tractor, and am wondering if it is possible to modify the Greenworks charger, for the build. The charger wants to see the BMS on the Greenworks battery, in the rural town I live in there appears to...

In 1980 sailing down the West Coast, discovered a need for battery charging, built a small wind turbine using a tape drive motor and a granger fan blade, on arrival in San Diego, studied some aerodynamics and developed a 4ft blade. Great success, over the next 3 years sold over 600 of them to...