New Grass Trimmer Goes Lithium Ion Power!

[zeropointbug]

IMO, I wouldn't but that weed wacker, the LiOn battery they use is most likely crap, and will only last a few years. I say modify your own gas one with some Headway LiFe or A123 cells, that would be a skookum unit.

[sikeston34m]

Originally Posted by zeropointbug

IMO, I wouldn't but that weed wacker, the LiOn battery they use is most likely crap, and will only last a few years. I say modify your own gas one with some Headway LiFe or A123 cells, that would be a skookum unit.

If I get 2 years of service from this pack, I'll be happy with it.

Then I'll modify it to have even more capacity.

The Battery Management circuit interests me because it operates with the Lithium Ion.

A protective circuit this size opens the door for use with other things as well. Without having to worry about discharging the cells too far.

[sikeston34m]

Sorry for not taking pictures guys.

The case uses torx screws. I was able to get them out with an allen wrench, but it was a pain.

I'll pick up some torx drivers soon and take pictures.

I also want to do a few other things when I have the pack apart again.

1. Install a 5S Balance lead that goes outside the pack so I can keep an eye on individual cell status.

2. Install a couple of power plugs so I can run a power analyzer on the setup. This will enable me to know the average amp draw, the peak amp draw, etc. Works kinda like an Eagletree. Hmmmm........I could even run an eagle tree on it, then we'll know how the cells carry the load.

Even if these are "only" 10C cells, that's still 1200 watts of power.

Not too shabby IMO.