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The power source chosen was 2 series connected LiFePO4 18650 cells from A123 Systems with a cutoff voltage from 2 V till 3.6 V and nominal voltage 3.3 V.

Comparative Analysis of High Power Density Bidirectional DC-DC Converters for Portable Energy Storage Applications

Obviously, doing this over and over takes a toll and ultimately as the cycles continued, some of the batteries started to fail the capacity test by reaching the cutoff voltage before they were supposed to--in other words, the capacity dropped below the 80-percent level--at which point we stopped testing that battery.

Aircraft batteries: Concorde still excels: We've put Concorde and Gill batteries, both sealed and flooded, head-to-head for a decade now. Concorde has taken the ribbon every time

15 and 16 demonstrate a narrowing of the conical top envelope associated with increased cutoff voltage, which has its experimental counterpart in experimental behavior under increased pressure.

Accelerating Scientific Discovery Through Computation and Visualization

The dedicated tester is a push-button, walkaway design with the capacity percentage displayed after the tester automatically shuts down at the proper cutoff voltage.

The Black and Decker j multi-stage charger has a cutoff voltage that's too high (15.2 volts) and a float that's also too high, at 13,5 volts.

Aircraft battery trials: Concorde sealed wins: in flooded designs, Gill and Concorde are close. But owners complain--and our tests show--that Gill sealed models aren't as long-lived as the Concordes

With the VDC Battery Minder, on the other hand, we would like to see a higher charge cutoff voltage for optimal charging and a lower voltage trickle mode for long battery life.

Smart chargers: battery tender is tops: a charged aircraft battery lasts longer but automotive chargers can trash the plates with too much current. Smart chargers are a better idea