[DonRotolo]

Not exactly a scientific survey, but:

We tested all our batteries in perparation for the NJ regional.

All had been fully charged, and allowed to rest 48 hours to bleed off any surface charge. The test was connecting a 1 Ohm, 125 Watt resistor across the battery and reading the voltage at 60 seconds. (We used a main circuit breaker and careful wiring to ensure safety.)

A 2007 and a 2009 battery had an end voltage of 12.46 volts
All the rest (2007/8/9) had an end voltage of 12.25 volts (within 0.03V)
The 2010 battery had an end voltage of 12.16 volts.

To me, it means that the internal construction of the 2010 battery is not as well suited to high current discharge as the MK batteries.

But, of course, a sample size of 1 is not a valid test.

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