Glickclik...how much does this batt weight? wondering if Lipo is any lighter, im used to using high discharge Lipo been in R/C hobby for over 5 years, price isn't bad now a day, and i have all the chargers i need, but i might go with this for larger robot and easier to charge inside the robot. Also does it self-drain fast if you left it unused for a long time? I know Lipos don't drain on the shelve when properly discharged for storage.

Lipo batteries keep their charge as long as they were charged before storing , I've seen them still at near full capacity 6 months later. Lipo are about 1/3 the weight of the lead acid counterparts. They should outperform a lead acid by leaps and bounds. Right.now I have two lead acid batts for 15 ah capacity but with these Lipo packs I could have 38 AH for the same space , or 18 ah and half the weight of the lead acid batteries. Either way they are better batteries , its the cost like 4 times more than lead acids though.

I know how lipos works, i like them for the performance to weight ratio, price is debatable where you get it from. But the battery in question is a Li-ion though, not lead acid. $40 for 9800mAh is nice with built-in charger, but what about discharge rating? if you run a lot of servo and motors in your robot, can it handle it? I know people runs high discharge 35c lipo in their R/C trucks and helis but now a day they even have 65-85C lipos, unbelievable!