After using electric pumps for a while I found myself prefering the hand crank kind... but on occasion I will use my electric pumps for larger tanked planes.

-

Re: Batteries

I've used the Tower batteries and while they are not problematic, you may find yourself sometimes wishing you had purchased a higher capacity battery to be able to charge a plane, glow plug, etc. while at the field.

I've obtained higher capacity gell cells for good prices from sellers that supply batteries for UPS devices.

Normally they have 6v and 12v batteries available of almost any capacity and size.

Of course some guys also just use motorcycle batteries too.