
CU-ER1 Operator’s Manual _ver 3.00
8.3 External Battery Pack
An optional disposable external LiMnO
2
battery pack is available from CU Medical Systems,
Inc. This battery pack has a capacity of 200 shocks (150J into 50
Ω
) when used before the
recommended usage date. The battery pack is shown in the following figure:
Battery Pack Case
UART Port Connector
AC/DC Adapter
Port Connector
The external battery pack is fitted with a circuitry that relays signals to the Paramedic CU-
ER1 indicating that an external battery pack is connected to its AC/DC Adapter port. The
signal is transmitted through the UART port.
Do not attempt to use external battery packs from other sources. External battery packs
from other sources will not be able to indicate to the Paramedic CU-ER1 that a battery
pack is connected at the AC/DC adapter port. When an external battery pack from other
sources is connected to the AC/DC adapter port of the Paramedic CU-ER1, the Paramedic
CU-ER1 treats the battery pack as if it is an output from either the AC/DC adapter or the
car cigar lighter jack cord. When this happens, the battery pack will not only be used to
power the Paramedic CU-ER1, it will also be used to charge the internal battery pack of the
device.
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