Custom installation of lithium iron phosphate batteries power this Frontier V6 off-road wheelchair by Magic Mobility. An electrical engineer and my sons helped convert this chair from lead acid to lithium iron phosphate batteries. Contact me if you have questions about how we did it. We'd love for the industry to make it easier to power wheelchairs with lithium batteries. Compared with traditional battery technology, these batteries charge 50% faster, last longer, are lighter, and have 2X the power density for more battery life in the same size and shape as lead acid. Check out this fun video of my son testing its performance in the driveway.