BLUESHAPE BUBBLEPACK - Manual (Page 5)

5
Principle of operation
Bubblepack internally contains 8 high quality Li-ion battery cells that
can deliver a total of 65Wh. A battery management system and a
high efficiency step-down converter create a choice of 3 voltage
outputs - those most widely used in today's latest miniDV and DSC
cameras:
• 14.8V nominal
• 11.2V regulated and fixed
• 8.4V regulated and fixed
The safety circuit features the usual, over and under voltage battery
protections together with full output short circuit protections.
How to check the state of charge
A 4-stage voltage-based gas gauge gives a rough indication of the
remaining capacity. The LED display is activated by the push button
switch on the front. The LED array displays the state of charge
based on the following criteria:
Voltage Approx. state of charge LEDs
> 15.85V 100% ~ 80% 4 LEDs on
15.85V ~ 15.63V 80% ~ 60% 3 LEDs on
15.63V ~ 15.00V 60% ~ 40% 2 LEDs on
15.00V ~ 14.60V 40% ~ 20% 1 LED on
< 14.35V <20% 1 LED flashing