DC-DC boost LX LCBST multimeter 9V battery replacement MOD

[@notsurt]

Is doubled up battery protection really a problem? I imagine probably wastes a little power, but I've used the basic TP4056 modules with built-in protection to charge batteries with their own protection many times with no obvious issues.

[@viocaia]

Depends of the cells...sometime the BMS doesn't let the battery in/out without data.

[@iuliandumitrescu9441]

Ce am inteles ,este faptul ca invertorul va functiona tot timpul ? (chiar daca multimetrul este pe off)

[@viocaia]

Exact! Consumul in standby e de 160 microamps, cam 0,0006Wh, consider o celula Li-ion 18650, cam de 8Wh,avem vreo 13000 ore de standby...sa nu uitam ca putem reincarca oricind elementul...sper sa nu gresesc cu numerele..

[@lezbriddon]

does the 9v boost run 24/7?

[@zeddpilsner4]

yes. I measured 0.3 mA quiescent current when it was set at 9 volts. This will drain the battery over time. I calculated about 200 days with a 1500 mAh 18650. so not great

[@viocaia]

Yes!

[@viocaia]

@@zeddpilsner4 How comes, I tested few modules, with different multimeters, not more than 170 micro amps on standby. I'll revise this in a video soon. But, the main advantage is that the Li-ion cell can be charged anytime we like! I don't really mind if I charge my multimeter once in 100 days! Come on...

[@syn80]

Didn't you say in another video that you can short 2 points on the charging board if your battery already has its own protection board? Also adding a small switch to turn off output from the battery should prevent battery being wasted when not using the multimeter.

[@viocaia]

That's no reason to do that, I have this installed in a MG multimeter for more than half a year, running strong...just let it be and use it as it comes.

[@syn80]

Ok great, my first time converting a 9v multimeter to rechargeable multimeter using a PS5 controller battery.