Battry mount locations

[Capt_Zoom]

What option is likely to be best mounting location for a really low seat bratstyle chopper that is retaining the starter (wife's bike).

1. Mounting the battery under the swing arm

2. Running two small battery's under the seat in parallel. The space under the seat is gonna be really tight.

3. Making a custom battery mount where the downtube cross piece/front motor mount is and mount it there. Would this upset or benefit the balance of the bike? or the cooling of the motor? Also thought about mounting it within a chin scoop attached to the downtubes.

 

[XSLeo]

Braille makes a small battery that has about the same output as our stock battery. The number is B106, A 6lb 6 oz battery about the same width and length but only about half as tall. Kinda expencive Almost $150. I think it's 283 cca where our stock battery is about 200 cca.