Finally together! 25.9v 31.2ah, in an EZip pack.
I started with 6 cell Gateway notebook batteries, (2600mah cells).
I really lucked out, these packs had cells connected, in such a manner, that 2/3rds the soldering was already done.
I ganged, similar voltaged cells, together, then charged "en mass", (6cell balance charger at 5 amps). Balance charger "balances" at a very low rate, so I individually "top charged" lower banks to attain faster equalization, at 4.2v. Cells were separated into original 6 packs, after equalization, to allow individual "bleed down" for 24 hours. Cells that maintained 4.19v +or- .01v, were selected for build.
Pack fit nicely into the OEM EZip pack, I did have to cut out the center screw mounts. 14ga wiring was replaced with 12ga and the 22ga charging wire was replaced with 16ga. 8wire, 7 cell, balance plug was also added and made retractable, through a small side hole.
Cells were securely wrapped with clear boxing tape and sheets of closed cell foam added, to firmly secure cells.
1/4" "Masonite" board was added, as solid base, for cells, and as secure barrier between cells and bottom contacts.
Just have to wait for some decent weather.
I estimate range at 40 - 50 miles, at the EZip Oem 16mph speed.
20 mph cruising speed should attain 30 - 40 miles.
The OEM, 10ah SLA batteries, when expended in 1 hour, output, only , 6.14ah!