I agree that SLAs aren't the way to go. I lived with my OEM 24V 10AH SLA battery alone until this spring (I installed the Currie conversion kit last July). This spring, I built a 24V 20AH LIFEPO4 pack using Thundersky cells that I bought from an American distributor (Elite Power Solutions in Arizona). The increased power in the LIFEPO4 battery pack is impressive. I still have my SLA pack , but it's loosing capacity and I'll be building a second LIFEPO4 pack this summer. With my new LIFEPO4 pack and the SLA pack mounted in the Currie rear rack, I believe I'll have no problems traveling to a town that's farther from me--it will be a 40-mile round trip. However, I alway pedal. Once I have 2 LIFEPO4 packs, I believe I'll have no problems with 50-60 miles, again, always pedaling. At present, I've taken a lot of 20 mile trips using the LIFEPO4 pack only and still have had lots of power in my pack, and I'm in a very mountainous area (west of Glacier National Park). I was able to buy the Thundersky cells on sale and my total cost for 8 cells was $208 plus shipping, which was $15 for me. Their regular price isn't too bad--8 cells run $240. If you take care of them, LIFEPO4 are supposed to have 2000 charging cycles compared to SLAs 600, a cost savings in the end.