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I used to use lithium batteries (CR123/CR123A) for my Nikon SU800 Commander to control my SB900, SB800 and SB600 speedlights. Unfortunately I found that after a heavy day’s shooting that the battery would die on me, so I decide to change over to re-chargeable batteries.

I bought some from ebay but found that after only 50 shoots in quick succession that the charge ran out.

Since then, I found different CR123 rechargeable batteries that lasted for over 300 shots in quick succession. In fact I don’t know how many shots I could take because I got bored and stopped at 300.
Details of these batteries can be found at:
Ebay: All for Laptop.

I am delighted with their performance and no longer worry about running out of batteries.

Here are some photographs from some of my Photo Shoots.

If you are interested in studio/speedlight lighting training then contact John Wood Portraits and I will be happy to share my experiences with both speedlight and strobe portrait lightin, without obligation.