New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
A look at todays Hybrid and EV battery packs
Battery packs exposed
2006 and up civic packs
Lead acid battery failure examined
Testing the sticks at the cell level
MaxIMA stick full discharge
Bumblebee battery replacements for the stock subpacks
Inside the cells
Seprating the cells for reuse
How it is wired
PTC strips exposed
The PTC thermistors
Battery current sensor
Inside the 100A semiconductor battery pack fuse
Did it again for the last time
A bad Prius subpack explored and fixed????
Rebalancing the Insight battery?
Insight battery
Insight Battery switching/current monitoring
The battery controller
Prius battery pack
State Of Charge (SOC) determination with NIMH batteries
Battery pack monitoring
What happens to a Prius subpack when you overcharge it?
Keeping Warm In New England
Plugging into the SUN
Making a small solar concentrator
Building MIMA and the plug in adapters
Converting a telephone truck to electric
DIY dual pulse Capacitor Discharge Spotwelder
Getting in shape while making electricity
Replacing gasoline with solar electric lawn equipment
What is Genesis One?
How to stop the aging process DIY
MIMA Install Day 2005 a Big Success!
Building a hybrid car grid charger
Tapping into the Wind
Expanding MIMA with the Distribution board ( users projects )

Bumblebee battery replacements for the stock subpacks

Bumblebee battery replacements for the stock subpacks
Max IMA batteries show improved internal construction

Several people have picked up the ball that was dropped by Hybrid battery repair, and are offering new sticks for the civic and the insights, so it is time that we see just how well the sticks are built and how well they perform.
I got 4 sets of 20 subpacks from Bumblebee, and am in the process of evaluating the performance, but we also know that the construction of the cells is a big factor in how well they can handle the currents involved with use in a Hybrid car. The first photo shows the inner cell construction of the MaxIMA cell
more and longer weld points on this cell allow the current to flow with lower internal resistance, so in theory that should translate into less voltage drop under the same load as well as less heating.