So many battery choices nowdays, LiPo, sealed lead acid, NiMh, . Any recommendations out there for large scale boats such as Dauntless, American Beauty with twin engines? I am looking for long run times and reliability. I see a lot of LiPos being advertised but am worried about the safety warnings and special chargers. Graupner sealed lead acid batteries are a lot cheaper than the Dumas batteries....

...just how does one know......help please!!!!!