Everything you know about lead-acid batteries? Push it all to one side. Lithium batteries work very differently, from the speed they charge and discharge, to the amount of power you can take from them. Probably the hardest thing to get used to is that they like to work.
The death of a battery will almost always be due to the death of a cell. In a sealed battery you can't access the cells to determine if a cell is in trouble.
In a T1 Lithium battery, we monitor the health of each cell and we provide you with the means and the knowledge to correct a low voltage cell if necessary.
Often known as BMS, be careful that what you think is a Battery Management System may in fact be just a Battery Monitoring System.
We monitor our cells and our batteries, and we also manage the charging and discharging of our batteries so you can rest in the knowledge that our BMS will not only warn you when your battery is getting low, but it will automatically isolate your battery if it gets too low as well as automatically stop charging from any source once your battery is full.
Maybe you suspect that your RV battery, or one in a set of paralleled batteries, is on the way out. With just a mains charger and some time, it's possible to diagnose the health of a battery.