I use couple of 100ah Batteries for my Harmon XXV (AIMS 1250 I/C). Heavy Lead Acid. I always wanted to get Lithium (Lighter) but too expensive for me. I hope in couple of years to get them. But I found this sale. $360 with coupon. If they are any good I don't know. Both good and Bad Reviews. Made in China (What's Not)
Amazon product ASIN B084DB36KW
Amazon product ASIN B084DB36KW