Battery Charging - NEX ROBOTICS Fire Bird V ATMEGA2560 HEXAPOD User Manual

Fire Bird V ATMEGA2560 Hexapod Robot User Guide
Figure 3.2: supply connection on the Hexapod

3.2 Battery Charging

Fire Bird V ATMEGA2560 Hexapod robot requires higher current than standard configuration
robot. In order to fulfill this additional current requirement while keeping weight low, 7.4V,
1800mAh lithium polymer battery (Product code: NR-BLiPo-2-1800) is used. It can supply
discharge current up to 36 Amps.
Battery is fixed inside the battery holder by means of velcro strap. To charge the battery remove
it from the Battery holder and charge it externally. It is highly recommended that you charge the
batteries in the open environment outside the building.
Never allow battery to go below 6.6V. Robot's battery low indication threshold is set at 6.6V.
When battery voltage drops below 6.6V, Battery buzzer will start beeping.
In multi-celled Lithium Polymer battery pack, it is possible for the individual cells to develop
differences in there charge levels. Since Lithium Polymer batteries are very sensitive to
overcharging, it is important that cells inside the battery pack should be kept at the equal levels
when charging.
© NEX Robotics Pvt. Ltd. and ERTS Lab IIT Bombay, INDIA 13