New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
Using the charger to run a deep discharge
Time to get serious about determining what actually fails in the sticks
A better way to test a full pack on the stick based level
What happens when you discharge completely?
Setting up to watch the sticks
First results
Recovery after the deep discharging.
More deep discharging.
Connecting to all the sticks with the multimeter test fixture
A graphical look at silver pack deep discharge 2
Testing a pack of new MaxIMA sticks with the multimeter test fixture
The next discharge after a regular plateau based recharge
Subpack 1
Subpack 2
Subpack 3
Subpack 4
Subpack 5
Subpack 6
Subpack 7
Subpack 8
Subpack 9
Subpack 10
Zap test of MP 10
Subpack 11
Subpack 12
Subpack 13
Subpack 15
Subpack 16
Subpack 17
Subpack 18
Subpack 19
Subpack 20
A look at todays Hybrid and EV battery packs
Battery packs exposed
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
Chevy Bolt EV joins the family
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 )

Time to get serious about determining what actually fails in the sticks

Time to get serious about determining what actually fails in the sticks
Getting ready to start testing

Since Hybrid battery repair has abandoned the pursuit of cell level rebuilding of the subpacks, and I have already built the welder, and other fixtures and test systems,that he does not want, I will use the equipment to dig deeper into determining how the subpacks look at the cell level.

A look at the traces below will show that many subpacks only have one cell that is a bad actor, others show overall deterioration that may or may not respond to charging.
Time to pin down some of the failure modes, and with the new smart chargers, we should be able to troubleshoot a problem pack and determine which sticks are acting up, and then which cells within the sticks require replacement to get the pack back into a useable condition for the least cost.
I grabbed all of the packs and sticks I have, and have assembled them so I can begin the testing.
The automatic whole pack discharger is working well with the 6 100W bulbs, so I will run capacity recovery test on all the packs I have available to see what we see.