Yardworks 20V 6AH Lithium Ion Batteries

I'm using three Yardworks 20V 6AH lithium Ion batteries in series to power my bike. I have them directly connected to each other, and I haven't had any problems. I take them off the bike to charge them. The batteries were purchased at Canadian Tire, and can either be purchased individually, or with a grass trimmer.

When I first looked at getting Lithium batteries, the only ones I could find that seemed reasonably priced were on eBay. The batteries were made and packaged in China and were wrapped in Duct Tape! These Yardworks batteries are still made in China (I assume), but they are encased in a plastic shell, have a dedicated unintelligent (or so it seems) charger, a warranty, and are available from Sea to Sea (to Sea?) across upper North America!

The Yardworks batteries are amazing! There is lots of detailed information about the batteries from other eBike riders here: Yardworks Battery Info so I won't say anymore about them.