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Quantum ES2 Dummy Battery - Energy Saver 2 f/ Canon 430EZ, 540EZ, 550EX; Nikon SB24, SB25

by Quantum
3.5 out of 5 stars 3 customer reviews

Price: $8.88 & FREE Shipping
Only 7 left in stock.
Ships from and sold by UsedPhotopro.
  • Quantum ES2 Dummy Battery - Energy Saver 2 f/ Canon 430EZ, 540EZ, 550EX; Nikon SB24, SB25
3 new from $7.95
$8.88 & FREE Shipping Only 7 left in stock. Ships from and sold by UsedPhotopro.

Frequently Bought Together

  • Quantum ES2 Dummy Battery - Energy Saver 2 f/ Canon 430EZ, 540EZ, 550EX; Nikon SB24, SB25
  • +
  • 14500 1200mah 3.6V Rechargeable Li-Ion Battery (Pair) + Charger Combo
Total price: $17.36
Buy the selected items together


Product Description

The Energy Saver 2 is the size and shape of an AA battery. It substitutes for one of the alkaline batteries in the flash battery comparent. Always start with a fresh set of AA batteries. The result will be much longer lasting AA's. The Energy Saver is for : Canon 430EZ, 540EZ, 550EX; Nikon SB24, SB25

Product Details

  • Item Weight: 0.8 ounces
  • Shipping Weight: 0.8 ounces (View shipping rates and policies)
  • ASIN: B0000C5RR8
  • Item model number: QUANES2
  • Average Customer Review: 3.5 out of 5 stars  See all reviews (3 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: June 17, 2003

Customer Reviews

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Top Customer Reviews

I bet a lot of people don't know what this is for, and neither did I for a long time, so I thought I'd write a review explaining it's purpose.

When you use a speedlight on your camera with an small external battery pack, the flash still requires batteries inside the flash to fire. You can't just take the batteries out of the flash and rely only on the external pack. What the flash does is partially drain it's own batteries first and then suck juice from the external pack as a secondary source. This doesn't always give good recycle times if your AA's are getting weaker.

What this does is trick the flash into thinking there is a battery inside the flash, so it will fire, but it will suck power straight from the external pack, giving you much faster recycle times. You would only use one dummy battery and three real alkaline/NiMH batteries. The in-flash batteries will still be drained of power unfortunately, but that power just isn't being used as the primary source for recharging the flash.

Or something like that.
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I needed to solder an external power supply to replace AA batteries and these did the trick. If you need long life for your AA powered device this product will help you accomplish the task.
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did not extend battery life as I expected. I should have realized one can't expect a dummy anything to work well.
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