I just read an email from a guy who is planning to row from Vancouver Island to Hawaii (I've been following him for awhile) anyway, he had a useful (I thought) piece of equipment that someone might be able to utilize, it's called a Watt's Up Meter and if you Google it (http://www.powerwerx.com/tools-meters/watts-up-meter-dc-inline.html) you should find it. it's a very small device that you can use measure eight parameters: Amp hours (Ah), Watt hours (Wh), voltage, Watts and captures peak current (Amps), peak power (Watts) and voltage sag (minimum Volts).
Fred Johnson Reno, NV
