thundercamel
10 kW
I thought about adding this to a couple of old threads, but they didn't seem exactly on this topic. For those hoping to get a charger they can adjust to a lower voltage with the goal of increasing lifetime cycles on their batteries, I've confirmed that the Vruzend 52 volt chargers are adjustable, slightly... I would assume their other chargers are as well, since they look the same from the outside.
The blue trim pot in the last picture below is factory set to 58.8 volts, but mine could adjust from 60.0 down to 57.7 volts. That would bring individual cell voltage from 4.20 volts down to 4.12 volts, which is better than nothing!
From http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries:
"Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life. For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles."
The blue trim pot in the last picture below is factory set to 58.8 volts, but mine could adjust from 60.0 down to 57.7 volts. That would bring individual cell voltage from 4.20 volts down to 4.12 volts, which is better than nothing!
From http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries:
"Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life. For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles."
