Datasheet

The Charger Board is currently being used to charge the robot batteries. Figure 12 shows the FROG
Battery Charger board.
The Charger Board was designed to charge Lead Acid batteries, but at this moment there is the
possibility of changing the Lead Acid to LiFePO4 batteries with PCM protection circuits. These
batteries have the same size and capabilities as the ones that we are using at this moment, but they
weigh ⅓ of the weight of the Lead Acid batteries. The LiFePO4 battery manufacturer states that the
users can swap the lead batteries with the new ones without having to change anything, and also will
be able to charge the batteries with the normal battery chargers. At this moment the charger circuit is
being tested for charging these new batteries.
FROG – FP7 STREP nr. 288235
Deliverable: D1.4 – Platform User and Developer Manual 21
Figure 11: battery charge characteristics
Figure 12: FROG Battery Charger Board