Rechargeable lithium ion batteries... finally!
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- Опубликовано: 21 авг 2024
- As a frequent location shooter, I depend a lot on portable power sources such as AA batteries a lot. From lav mics to flashes to remotes to lights and more, AA batteries are a requirement of photographers. I like rechargeable batteries, but the 1.2V they provide has been a limitation as well as the degrade performance over fairly short periods of time. Then I came across Pale Blue Earth batteries and I am hoping they pan out in the long run as they have in the short term.
Not a paid advertisement. Just someone who is a fan of something missing in the industry for a while. Not just lithium ion, but rechargeable lithium ion AA batteries. I'm curious if other photographers have tried them and what they think.
paleblueearth.com
Flash demonstration: 9:28
The 1.5v / 1.2v voltage difference is really only present when comparing fully charged batteries. Alkalines only run at 1.5 volts at the very beginning of their cycle, and decrease substantially in voltage as they are discharged (all the way down to 1 volt or so, when they are generally considered "discharged"). At 1.2 volts, an alkaline would still have a little under half of its capacity left. NIMH, in comparison, more or less maintains approximately 1.2 volts throughout almost their entire cycle. (This is why most devices designed to use alkalines still perform fine with NIMH, as 1.2 volts isn't really "out of spec" for them.)
Batteries also tend to experience a voltage drop when there is a high current draw being applied. Alkalines have some rather interesting behavior here in that they will do quite alright delivering very high current in very short bursts, but any high-rate current draw also substantially reduces the cell's total capacity. NIMH batteries experience this behavior too, but to a much lesser extent (and often substantially outlast alkalines in high drain applications as a result). The primary drawback here is that NIMH batteries essentially "act like" partially discharged alkalines throughout their entire cycle. They're much more consistent, but even a freshly charged set of them can't quite "match the punch" of a fresh pack of alkalines out of the gate.
It's ultimately a matter of trade offs. Alkalines are basically great sprinters, but NIMH can far outlast them in a marathon.
Thanks
These are no good for portable radios. YOU CAN"T LISTEN TO AM RADIO! The interference caused by the electronics in the battery kills AM radio. For portable radios stick to NiMH.
The audio here is only coming out of my left channel!
Dude, I hear both. Are your ears ok? ha ha. Kidding. I didn't notice that. I just saw that. Thanks for the heads up. I hate my voice so much, so I guess in a way I was trying to help people by only torturing one ear.
Very Good Video, Thanks
Sadly these AA lithium ion 1.5v battery manufacturers recommend you don't use them with camera flashes. Some manufacturers are crafty and they don't state this info clearly.
Why is that?
@@RodneyKimbangu It can cause the electronics in the battery to overheat and either die or cause damage to the flash. These are not good options for high drain devices like camera flashes.
@@extropy1 Thank you. I had no idea.
@@RodneyKimbangu Yea they're typically rated for 1A or 2A of max draw. Cameras tend to draw several amps of instantaneous current during the flash, which can stress the internal voltage regulators of the lithium ion rechargeables.
Alkalines and NIMH batteries don't have this problem because they don't have internal voltage regulator circuitry.
@@photoniccannon2117 thanks a lot
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