Everything I've seen is for larger batteries. I suppose you could buy one of those and cut it down to fit. If it's made of polyethylene, you could cut the center of one and thermal weld the two ends back together.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.