http://www.shetlandattackpony.co.uk is back up again - I've had to move my servers over to a different provider as 1and1 were seriously messing me around.
chrismc: I agree that 6 hours battery life would be rubbish for a caving instrument - if it needed to be on all the time. However, this device only needs to be turned on for about 30 seconds per reading. When not in use, it consumes a tiny amount of current - I have calculated that it should take about 2 years to fully discharge the battery while in "standby"
One of these was used on a recent expedition to austria, where it was used most days without a recharge for 3 weeks. It came back with about 50% battery life remaining, and about 200 legs recorded.
Phil Underwood
(Shetland Attack Pony designer)
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