If the LED fails to illuminate or stays on for less than 5 seconds, the capacity is below 50% and requires a full recharge cycle. Above 50% Capacity: Charge for 8 hours. Below 50% Capacity: Charge for 16 hours.
Batteries must be left in a discharged state, as this causes permanent damage. ps-855b maintenance manual
With no external power applied, press and hold the button for 5 seconds. If the LED fails to illuminate or stays
Once a year, a full battery capacity test is required to determine the remaining life of the cells. Essential Maintenance Procedures ps-855b maintenance manual
