Quote Originally Posted by Robin Hewitt View Post
Hmmm

If it wants 7-12V then you can run a 9V battery a lot flatter than a 7.2V battery before it drops below 7V. The poor things do tend to fade before they reach their rated Ah.

I think it's looking for a 9 Volter.

Is it really drawing 400mA?

0.4A at 9V is 3.6W. Sees like a lot, does it run hot?
Actually after looking again , its running at 260mA / 800mW, I think also the voltage may affect the range, as it quotes 800m to 1600m @ 12v/280mA's So I might be better finding a 12v battery if I want the better range. The more powerful ones quote 900mA's/2500mW's

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