Get a lithium battery and use the lithium setting to keep it charged.
I just got a NOCO Lithium NLP20 for my Sporty. Can't remark on longevity, but it's been good so far.
I just got a NOCO Lithium NLP20 for my Sporty, can't comment on longevity but I like it so far.
The NOCO Lithium NLP20 is 600 Amps and a better deal.
I just got a NOCO Lithium NLP20 for my Sporty. Can't comment on it's performance yet but it has good reviews.