Sunder
10 MW
Nothing to report yet, but grand adventures await.
Planning on connecting 57 or 60 of these batteries in series, for an electric motorscooter. I am intending to build 3 x 46v packs to be joined by solid copper bars. Makes them easier to work with both weight (Each cell is 900g, so the completed battery is going to be about 55kg) and electrical safety. It also means that if I ever decide I've had enough, I can take the batteries out to use for an off-grid system.
My plan (though this could change), is to 3D print assembly guides, and build custom acrylic boxes to contain these in.
As LTO is virtually indestructible, I am using individual cell protectors, no BMS. That was a conscious choice, as I've had the BMS cut power on me just as I finished overtaking a car. The driver was not happy, but I was very lucky.
Their energy density is fairly poor, so I'll be losing range. But their power density and cycle life are huge improvements, and 99% of my journeys can be done without a mid-trip recharge.
It will probably take me 2-3 weeks of opportunistic evening work to QA each of these cells, so updates will be slow, but I'll post them for anyone interested.
Planning on connecting 57 or 60 of these batteries in series, for an electric motorscooter. I am intending to build 3 x 46v packs to be joined by solid copper bars. Makes them easier to work with both weight (Each cell is 900g, so the completed battery is going to be about 55kg) and electrical safety. It also means that if I ever decide I've had enough, I can take the batteries out to use for an off-grid system.
My plan (though this could change), is to 3D print assembly guides, and build custom acrylic boxes to contain these in.
As LTO is virtually indestructible, I am using individual cell protectors, no BMS. That was a conscious choice, as I've had the BMS cut power on me just as I finished overtaking a car. The driver was not happy, but I was very lucky.
Their energy density is fairly poor, so I'll be losing range. But their power density and cycle life are huge improvements, and 99% of my journeys can be done without a mid-trip recharge.
It will probably take me 2-3 weeks of opportunistic evening work to QA each of these cells, so updates will be slow, but I'll post them for anyone interested.