Amp-Hour Meters

Kali Shaw

What is it?Indicates system’s condition

Counts amp-hours used when using powerCounts backwards to zero

Zero means battery is fully charged

Nickel-cadmium / nickel-iron batteries Hard to tell state of charge from voltage

Sulfation caused by undercharging is main destroyer of lead-acid batteries

*Note: Amp hour meters lose accuracy if batteries are always run in a very discharged state.

12 or 24 volt battery systems (48 w/ adapter)

Lit when charging, flashes when charged

Volts, Amps, Amp-HoursAmp-Hours in numbers or as % full

Records min/max voltage,days since charged and equalized, total lifetime amp-hours withdrawn

Tri-Metric 2020 Battery Monitor

Amp-Hour Meter –Creative Energy Technologies

Shunts

Required for operationBased on inverter type and wattsRelatively inexpensive

Prices

Trimetric 2020 Meter $177.00

48 Volt Adapter/ Surge Arrestor $24.87

Shunt $34-64.87

(CET)

TM500 $195

TM48 (12,24,48 volt system requires) $40

Shunt $20

(EO)

Sources

Creative Energy Technologies @ http://www.cetsolar.com/metersamps.htm or (518)287-1428

Energy Outfitters @ http://www.energyoutfitters.com/default.htm?http://www.energyoutfitters.com/products/p_m_electronics/xantrex_tm500.shtm