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Hi pls forgive my weak English I have 4 batteries agm 200 ah in series installation I didn't know that I must not let them discharge under 50 per cent so they died and I want to buy lithium batteries in AliExpress the cheap ones that cost under 150 USD each 100 ah 12v I turn off my...

i will install it like this ac to charger to regulator to battery li ion 12v is it possi le the charger in the images bellow

i have this cheap pwm charger and i have 4s lithium battery that cam charge up to 16 v but the max voltage i get in this pwm charger is 15

in my country i have only this bms is it good or i need to look for samthing alse i want to build 2X100 ah 4S 16.8V lithium battery https://www.jumia.ma/ar/bms-4s-100a-balancer-18650-lithium-battery-protection-board-charging-with-balance-14.8v-generic-mpg1375923.html

hi i have build a 14.4 v battery 4s li lion and with daly bms i cant charge it above 15v i dont know why

can i charge my lithium battery with this generator

hi i found that e bike batteries are much cheaper if i buy one and use it as solar storage can it work sry for my english here is the link of the battery https://aliexpress.com/item/1005004247060090.html

please help me how can i change settings for this inverter

hi and sorry for my english i have solar system with 4 acid batteries 200ah they die after 1 year of use i will change them with lithium batteries and i want to know if i need bms or this inverter is anough and also i need any advice of cheap lithium batteries my daily use is about 4 kw a day

hi sry for my english my friend made for me a 4s 100ah lithium battery with used lithium cells taken from broken laptops every cell have 4.2v limit i need to know what is the voltage to stop charging them at and to make them last longer thanks

hi is building a 32650 battery cheaper then buying packs from alibaba or aliexpress and i want to know any good cells from alibaba to buy or aliexpress if you have links too good buyers please

i have 2x 280watt 34v 9 amp i have regulator that support up to 150v dc and i want to charge 14.4 v battery lithium ion do i install the panel paralel or serie

i have lifepo 8xLF280K battery i made them to be 12V system. and i want to choose best solar panel to charge them there is my options : 470WC JINKO : vmax 32v 10,5 A or 660WC : Vmp 38 V 17,24 A

hi i have built 4s li-lion battery with 18650 used batteries but tested but i have this problem you can see in the picture the first pack always charge first and drop first can you help pls

laptop charger not charging my lithium battery i plug it like this ac to laptop charger to mppt regulator to battery but in the regulator it shows just the voltage and its not giving any power to the regulator

please guys i need your help try to understand me thx i have 100ah 12v 4s battery that can go up to 16.8 v so my system go like this battery to inverter 12v to make it 230v so i can use it but the probleme is when i try to charge my laptop or phone or tv the inverter start to cut off the...

hi sry for my english i have this instalation and the heat is too much when itry to charge it the heat start going up in the wires the batteries are 60 ah 12v every battery have bms