I have a Triton (first generation) multi-mode charger that will charge
NiCad, NiMH, LiPoly and SLA. It will cycle and record capacity and
both the charge and discharge rates can be adjusted.

In the US it is distributed by Great Planes hobby company. Their
products are carried in most hobby shops. The URL for the most
current version, Triton2 is he

http://www.electrifly.com/chargers/gpmm3153.html

Most modelers use the same 8AH size SLA that are found in sailplanes
and this charger is used to keep them charged.

Mike