Denso BHT-100BW-CE User Manual page 32

• The BHT has an integrated backup power source which backs up the memory and calendar clock in
the BHT when no battery cartridge is loaded or the voltage level of the battery cartridge drops
below the specified level. The backup power source is automatically charged by the battery
cartridge.
When you first load the battery cartridge after purchase or you load it after leaving the BHT unused
for a long time, do not remove the battery cartridge for approx. 24 hours after that loading. This is
for charging the memory backup source integrated in the BHT.
• Avoid storing the rechargeable battery cartridge in a hot place. The battery capacity may be
decreased.
• Do not touch the charge terminals of the rechargeable battery cartridge or stain those terminals.
Doing so could result in a charging failure.
Chapter 2 Getting Started the BHT and System Menu
19