Realistic PRO-26 - Preparation and Setup; Power Sources

3. Install two batteries in the compartment and two in the cover as
indicated by the polarity symbols (+ and -) marked inside the
compartment and cover.
Caution: Use only fresh, AA alkaline, nickel-cadmium, or general
purpose batteries.
4. Replace the cover.
When the batteries are low, your scanner beeps every 15 seconds and
flashes BATT. Lo. If this happens, immediately replace or recharge
all four batteries and ensure all four batteries are of the same type. See
‘Important Information About the External Power Jacks” and “Charging
Nickel-Cadmium Batteries."
Important Information About the External Power
Jacks
The scanner has two external power jacks —power and charge.
You should understand the purpose of each jack before you connect
any adapter to the scanner.
The POWER jack lets you connect an external AC or DC adapter to
power the scanner. You can plug an adapter into this jack with either
rechargeable or non-rechargeable batteries installed.
The CHARGE jack lets you connect an external AC or DC adapter to
power the scanner and also charge the internal batteries. Use the
CHARGE jack only when rechargeable nickel-cadmium batteries are
installed.
Warning: Never connect either adapter to the CHARGE jack with non-
rechargeable batteries installed. If you try to recharge non-recharge¬
able batteries, they become very hot and could explode.
Charging Nickel-Cadmium Batteries
The scanner has a built-in charging circuit that lets you recharge nick¬
el-cadmium batteries while they are in the scanner. To charge the bat¬
teries, simply connect an AC adapter or a DC adapter to the scanner's
CHARGE jack.
Warning: Do not connect either adapterto the scanner’s CHARGE jack
if you have installed non-rechargeable batteries (standard, extra-life,
or alkaline). Non-rechargeable batteries become hot and can even ex¬
plode if you try to recharge them.
Fully discharged batteries take about 10 to 18 hours to recharge. You
can operate the scanner while recharging nickel-cadmium batteries,
but the charging time is lengthened.