On Dec 4, 12:45*pm, sisu1a wrote:


*40 amp/hr is $800 (U1-12XP, their battery which is the same size as a
12v 12 amp/hr lead brick but half the weight)
*24 amp/hr is $600 ( U1-12RTL, same size/weight as above but with
built in battery management system)
Both series are claimed to be able to be charged on most standard lead
acid chargers (set for AGM/GEL cells)

-Paul

Paul, thanks for the links, I never knew these existed . If one can
actually get "Thousands of cycles" then these would be much more
affordable than the steep initial cost might sugest. Have you been
using one in your plane ?
Thanks