O P E R A T I N G M A N U A L
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Radio Pack Battery System
Radio Packs (RPs) are powered with one (1) Lithium-Polymer rechargeable battery for greater than 10 hours (2.4GHz) or
9 hours (900MHz), or they may be powered with three (3) AA Alkaline batteries for approximately 5 hours (2.4GHz) or 4.5
hours (900MHz).
There are several considerations you should take into account when using AA batteries. The RP’s battery level and
remaining battery time indicators only reflect battery life for lithium-polymer batteries; therefore, those screen options will
not be used when AA batteries are in use. In cold weather, AA batteries do not release their stored energy completely, so
the result is a dramatic reduction in operation time. It would not be uncommon to have an AA battery only last 50% of its
original life when used in very cold situations. Also, remove the AA batteries when not in use to avoid potential damage from
leaking battery acid that can sometimes occur in these type batteries.
The battery can be charged in multiple ways.
Charge via RP Wall Charger
To charge the RP, connect the plug-in battery charger to a standard wall outlet and to the Micro-USB connector on the RP.
The connector is located under the rubberized access cover on the side of the RP. The battery requires approximately three
(3) hours to charge from empty.
Charge via USB Cable
The RP may also be charged by connecting the USB-A-to-Micro-B pairing cable to the USB port of a PC and to the Micro-
USB connector on the RP. The connector is located under the rubberized access cover on the side of the RP. The battery
requires approximately three (3) hours to charge from empty.
Charge via 5-Bay Battery Charger
The 5-Bay Battery Charger charges up to five (5) CoachComm lithium-polymer batteries at the same time. The battery
requires approximately 3 hours to charge from empty. This charger may be located in the rack of the Sideline Cart.
If charger(s) overheat, it will need to be moved to a cooler area to charge batteries properly. As a lithium-polymer battery
safety mechanism, the battery chargers include a safety circuit, which prevents charging of batteries if the ambient
temperature is too hot. It is important to note that the chargers do NOT run from the battery bank inside the sideline cart.
For the batteries to charge in the 5-bay charger, the Sideline Cart must have external AC power.
Figure 48: 5-Bay Battery Chargers
