Try this: https://www.amazon.com/Battery-Charger-Lithium-Li-ion-2-5mm/dp/B091915WN9/ref=mp_s_a_1_1?crid=9LF1AH9ABDUU&keywords=rand%3A+Abakoo+4.2+4.2+out+of+5+stars+42+Reviews+Abakoo+42V+5A+Battery+Charger+for+36V+Lithium+Li-ion+Battery+Pack+with+DC+5.5+x+2.5mm%2F5.5+x+2.1mm+Plug&qid=1683647240&sprefix=rand+abakoo+4.2+4.2+out+of+5+stars+42+reviews+abakoo+42v+5a+battery+charger+for+36v+lithium+li-ion+battery+pack+with+dc+5.5+x+2.5mm%2F5.5+x+2.1mm+plug%2Caps%2C358&sr=8-1