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Re: Chicklet Amps
700mAh refers to the fact that the backup battery should be able to provide 700mA for 1 hour. (700mA x 1 h = 700mAh). Typically a NiCd battery such as this can be discharged at between 10 - 20 "C", where "C" represents the rated one hour charge capacity (700mAh, in this case). So in other words, the peak current draw that you could place on the backup battery would be around 7-14 amps, but at 7A it would only last for 6 minutes (7000mA x 0.1h = 700mAh). Actually it would last for less than that, as the quicker you drain a battery, the less efficient it is.
A similar thing occurs with the 18Ah pb-acid gel cell batteries used for the robot. Theoretically in a three minute match (I'm rounding up to simplify the math) you could draw 18Ah / .05h = 360amps for the duration of the match. Again, physics and chemistry intervene to reduce this discharge rate, but the estimate forms a good starting point. Considering that there is a 120A breaker on the robot, any fully-charged battery should be good for at least two full matches at FULL power for 100% of the match time... although the batteries are much happier if you can charge them after each match.
Jason
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