Put together a nice e-bike but I messed up on the battery
Hi all. Looking for advice. I bought a 26" Mongoose bike and a 1000 watt front wheel conversion kit. Everything works great with one exception. I made the mistake of trying to save a few pennies by buying 4 12V-18AH Lead Acid batteries to provide power. They are rear rack mounted with the controller in a cloth pouch. It looked okay but at 50 pounds of battery, it was too unstable for me to ride it without risking my life! I crashed the thing twice before I finally gave up. Now it's collecting dust in my closet. Tried selling the lead acid batteries on Ebay for $100 + shipping but no luck.
Other than giving up on the idea of an Electric does anyone have some advice on where to go next? Ideally, from what I saw, a lighter battery, say 48 V 15-20 A/H LiPo battery pack mounted on a lower center of gravity would do the trick. Mounting it is a different story. It's the old story. I'm on a limited income and have no vehicle at the moment. Any help would be appreciated. Thanks..