iTechworld iTECH120X Deep Cycle Lithium Battery

Always had dramas with their BMS system in these lithium model batteries. I have 3 of these batteries in a boat, two are up front independent in series for a 24v electric motor and 1 down back for electronics only. All of them have given me BMS problems at one time or another. One of the wired in series more so. I had previously sent a battery back (can't remember which one) to itech for warranty and testing for these exact problems! and was told it was fine and they sent it back. Still dramas! The BMS sometimes is near impossible to get woken up once it switches off which then renders the electric motor useless. I even bought THEIR 20A charger as it stated on website that it automatically resets the BMS to start charging- well not this bloody battery, I can hook the charger up and another fully charged lithium battery to it and do as specified on their website whilst having a multi meter attached, it states it's supplying charge but battery doesn't seem to take it. Can sit charging for days with no effect. As soon as you disconnect from the charger it goes back to 6.something volts. has caused me all sorts of headaches, so much so I wouldn't recommend their products.. I've got an Invicta lithium start battery for the motor that has never had an issue (3+ yrs) and now have my 6yr old spair 120 lithium battery hooked up in parallel with the other itech and that doesn't give me dramas like the itech did.