crwdns2934241:0crwdne2934241:0 John

crwdns2934249:0crwdne2934249:0:

Hi you would need to dismantle the controller and clean the battery contacts with isopropyl alcohol and a toothbrush, if they are really bad and that doesn't work, then you would need to buy replacement ones

crwdns2915684:0crwdne2915684:0:

open