The best replacement for shorai is yuasa.

The best alternatives to shorai are rated as following:
★★★★★  yuasa
★★★★  anti gravity
★★★  ballistic
★★★  earthx
★★  turntech
★★  mirai

Your alternative for shorai is not listed? Suggest!
Speaking about shorai, one probably shouldn't forget about battery tender.

Other search terms related to shorai and their ratings are:
★★★★★ battery tender
You have in mind a companion for shorai and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of shorai in all years. Click on graph for more.
shorai
yuasa
anti gravity