HME AC850 User manual

HM ELECTRONICS, INC. 14110 Stowe Drive, Poway, CA 92064 USA HME# 400548
Rev −7/26/04
AC850
Battery Charger
OPERATING INSTRUCTIONS
The AC850 Battery Charger is a four-port unit for charging the BAT850 NiMH Rechargeable
Battery Pack, used with the PRO850 Wireless Intercom. AC850 maximum charging time is 3
hours, for a fully discharged battery pack. To operate the AC850, follow the instructions below.
Figure 1. AC 850 Battery Charger
SETUP
Figure 2. Figure 3.
• Plug the connector on the power adapter cable into the receptacle on back of the AC850 as
shown in Figure 2.
• Plug the female connector on the AC cord into the power adapter as shown in Figure 3.
• Plug the other end of the AC cord into an electrical outlet.
A red POWER light adjacent to each of the four charging ports should come on when the power
cord is plugged in. The POWER lights will remain on as long as the unit is plugged in.
Power
adapter AC cord

OPERATION
Place a BAT850 battery pack into a charging port on the
battery charger as shown in Figure 4, with the +and −signs
on the battery adjacent to the +and −signs on the port.
• A steady amber CHARGE light should come on adjacent
to the charging port, indicating the battery pack is
charging.
• A blinking amber CHARGE light indicates the battery
pack or charging port is too warm. If this happens, leave
the battery pack in the charging port. When the
equipment is cool enough, charging will begin and the
amber CHARGE light will stay on steady.
• A green READY light will come on adjacent to the
charging port when the battery pack is fully charged.
Fully charged battery packs can be left in the charging port indefinitely without harm.
The green READY light will remain on until the battery pack is removed from the port.
SPECIFICATIONS
AC850 Battery Charger:
Power Input 15VDC, under 50 watts maximum
Operating Temperature *32°F - 104°F (0°C – 40°C)
Number of Charging Ports 4 for BAT850 Rechargeable Battery Packs
Charging time 3 hours maximum
(for uncharged or fully discharged battery packs)
Status Indicators POWER (red), 4 ea
CHARGE (amber), 4 ea
READY (green), 4 ea
Weight 2.28 lb (1.03 Kg) with power supply and AC cord
Dimensions 16.3”W x 5.4”D x 1.7”H (41cm x 14cm x 4.1cm)
BAT850 Battery Pack:
Battery type 7.2V 2100mAH NiMH rechargeable battery pack
Battery life 14 hours (typical)
* NOTE: At elevated ambient temperatures (near 104°F, 40°C), charging times and battery
capacities will be somewhat reduced.
Figure 4.
POWER
Red CHARGE
Amber
READY
Green