User`s manual

BL1600132 s Battery
Battery Life and Storage Conditions
The battery on the BL1600 controller will provide at least 9,000 hours of
backup time for the onboard real-time clock and SRAM. However,
backup time longevity is affected by many factors, including the amount of
time the controller is unpowered and the SRAM size. Most systems are
operated on a continuous basis, with the battery supplying power to the
real-time clock and the SRAM during power outages and/or during routine
maintenance. The time estimate reflects the shelf life of a lithium ion
battery with occasional use rather than the ability of the battery to power
the circuitry full time.
The battery has a capacity of 190 mA·h. At 25°C, the real-time clock draws
3µA when idle, and the 32K SRAM draws 2µA. If the BL1600 were
unpowered 100 percent of the time, the battery would last 38,000hours
(4.3years).
To maximize the battery life, the BL1600 should be stored at room
temperature in the factory packaging until field installation. Take care that
the BL1600 is not exposed to extreme temperature, humidity, and/or
contaminants such as dust and chemicals.
To ensure maximum battery shelf life, follow proper storage procedures.
Replacement batteries should be kept sealed in the factory packaging at
room temperature until installation. Protection against environmental
extremes will help maximize battery life.
Replacing Soldered Lithium Battery
Use the following steps to replace the battery.
1. Locate the three pins on the bottom side of the printed circuit board
that secure the battery to the board.
2. Carefully de-solder the pins and remove the battery. Use a solder
sucker to clean up the holes.
3. Install the new battery and solder it to the board. Use only a Renata
CR2325RH or its equivalent.