Tiny
.
Yes I put a Ping battery in the Currie case. I'm the third I know of to do it. The case has the advantage of protecting the battery (it is soft shell), easy on /off, charge, tidy look. It is interchangeable with the SLA. You can have one SLA with it, as back up. I got Pings 15 AmpHr Ver 2.5 LiFePO4. I get as much as 32 miles on hilly terrain with it. I do pedal a good bit. It's good for me.
.
People who mount Pings on top of a rack put them in a metal tool box. I did have to modify the case a little to fit the battery. Ping made it to fit in 2 demensions, but it had to be thicker.

I have 2,614 miles on my eZip by my Cateye Odometer. A bit more than half is with Ping's battery. You can reach him directly at http://www.pingbattery.com/servlet/StoreFront. He answers emails within about 24 hours and he IS the manufacturer unlike others.

Don