Thu Dec 8 15:23:11 EST 2011 Larry Colen wrote: > On Dec 7, 2011, at 8:47 PM, John Sessoms wrote: > > > From: Larry Colen > >> On 12/7/2011 5:35 PM, Igor Roshchin wrote: > >> > >> I did notice that they said only 500 recharges rather than 1500, so > >> that > >> might be one of the tradeoffs. > >> > > > > Well, just going by the math ... > > > > The 1500mAh Eneloops give 1500 charges X 360 flashes per charge = > > 540,000 flashes > > The 2500mAh Eneloops give 500 charges X 460 flashes per charge = > > 230,000 flashes > > > > 2 x 230,000 = 460,000 > > > > So it looks like the new high power ones have less than half the > > usable life of the old ones. > > > > Price-wise, they cost 67% more than the regular eneloops ($24.99 vs > > $14.99), but only give about 43% of the value. > > Lets say that you have two sets of batteries so you always have a spare > charged set. And lets say that you shoot 300 frames a day, or that you > have to change batteries every day. With a thousand charges you get > three years of use, being 1/3 less likely to run out of charge at an > inconvenient time. > What also matters is the discharge characteristics, how the voltage > drops off with time, how the current does etc.
Exactly! You read my mind. In addition, when I fly and try to minimize the weight and volume of the equipment to carry, I'd prefer to have fewer batteries with higher capacity. Currently, when I go to an event where I am doing considerable amount of flash photography, I have a set of 2500 mAh non-hybrids, and a set of "regular" hybrid eneloops as spares and as a backup for emergencies. I usually freshly charge (top off) them all, right before the travel. When I take the flash but don't expect much of use, I take only one set. It would be convenient to have that set consisting of high-capacity and low-self-discharge batteries. > > I'm definitely going to give them a try for my next set of batteries. > That's what I am considering. Please, let me know if you buy them early then I would get to do that. And they are available on Amazon for about $20 for a set of 4: http://www.amazon.com/Sanyo-Capacity-Pre-Charged-Rechargeable-Batteries/dp/B0058GZWXQ/ Or from a bunch of other sellers on Amazon: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=Sanyo+XX+Battery+Powered+by+eneloop%2C+2500mAh&x=0&y=0 Igor -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
