Bought cheapest lithium (Kings)batteries in Australia. They are 8 mths old and arent charging beyond 3rd capacity on mobility scooter. Scooter only has lines that represent charge. So took back to store and they charged up just fine, but wont using Victron. They are in 24v mode on the scooter. I’ve programmed the bictron but it still goes back to storage…….
When I plug the charger in, I press lithium ion and it goes to absorb or bulk, but after 20 mins it goes to storage. Its driving me nuts as I dont have the expertise to work out what the hell us going on. I’m guessing it’s either the scooter or the batteries, but as I said they charged up fine at the store. I’m disabled so its really frustrating not being able to get about. Please help
This sounds like a simple volt meter, often used to give an idea of the charge. This should not be used to determine if the battery and or charger have defects, it’s way to imprecise for that.
Assuming you’re talking about the blue smart IP65 charger set to li-ion you can check the charge voltages in the manual and compare them to the specs of the battery.
When looking at the 100Ah 12V model they indeed use a higher charge voltage than the smart charger is set to. You can adjust this voltage under advanced settings in the victronconnect app.
If it were my battery and charger i probably would not adjust settings. The graph below shows how using voltage to determine state of charge is different with li-ion, meaning that your battery is probably charged 90-95% or more instead of the 75% you interpret from the led bars.
It’s worth checking to make sure the charger is hooked up correctly; with (2) 12v batteries in series, the charger needs to be connected to the +ve terminal on one battery and the -ve terminal on the second battery.
It’s an obvious thing, but easy enough to mistake, certainly wouldn’t be the first time I’ve seen a 24v charger connected directly to only one battery in a 2-battery series connection.
