With the older Inon strobes with the incandescent model light you should be careful with 'higher" voltage batteries.
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I have heard that worry, and know that there are a couple of devices that have high voltage sensors, and cannot use them. But under discharging conditions...under load...they have almost identical voltage to standard batteries.
That maximum of 1.8 only happens with completely charged batteries, under absolutely no load. Put even a small load on them and one is around 1.5 to 1.55.
Even compared to alkaline batteries...they have almost identical in use voltage to start, but keep their voltage far better. So if their voltage is an issue, then don't ever use regular batteries.
On my last trip, due to having to carry on all my batteries, I used some disposables for my regular dive lights (so I did not have to carry them back with me)...have gotten so used to how stable the light output is, that I was shocked how quickly the light output dropped. After one hour of use, the difference was obvious. With NiZic, you cannot tell the difference after over 5 hours.
I know of no person that has actually tested them that is not using them.
A simple test, if you have two strobes:
Put low discharge in one... put NiZic in the other.
Set the strobes to maximum output.
Fire off as many flashes as you think is necessary for a good test.... I've done it until the recycle time was twice what it started with the slowest set.
Remove batteries and see how hot they are.
Repeat with the batteries recharged and exchanged in the units (so that strobe differences are removed)
The effect is quite amazing to see.
If you have a smart charger, set the recharge rate to match the NiZic recharger and see the battery charging temperature difference. With mine, the low discharge got almost too hot to comfortably touch.. and the NicZic were room temp.
This is one of those items that the "experts" seem to have trouble understanding.
