I charge 3000hvs with a 6-7 cutoff at 5 amps Hvs can go between 5-7 amps.
Origional sanyo 3000s probably want 4 cutoff at 4 amps they are fragile
Pan3000s 5 amps at 4-5 cutoff
2000s Nicads I probably would go for 5 amps with at least a 7 cutoff
I don't use trickle or even consider using trickle. The trick with NiMH is charge them right before you use them.