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Mitch Gross
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The Dionic 90 is the same size and weight as the Hytron 50. At 90w, the Dionic will power a RED for about 1.25 hours.
The simple rules on flying with Lithium Ion batteries:
Nothing in cargo; only in carry-on.
Under 8g of lithium (under 100w like a Dionic 90), as many as the size & weight limits of airline carry-on rules allow.
Over 8g (such as a RED 140w), a maximum of 25g of lithium content -- in this case no more than two RED 140w batteries.
For Hytron batteries (NiMH), no restrictions.
You may be able to find cheaper options, but you will usually get what you pay for. I've seen batteries that were supposedly identical to A/B that didn't last for half the lifespan. Major manufacturers as well.
There are other brands that use both V-lock and A/B mount, but all of the batteries are "smart" batteries that talk to their chargers to regulate the cells. This means that no one's chargers will work with anyone else's batteries. I can name half a dozen other battery manufacturers of varying quality and I know that none of them will allow one to interchange batteries and chargers between manufacturers. I have not tested it but I'm guessing this is true for the RED batteries and chargers as well.
Mitch Gross
Abel Cine Tech
The simple rules on flying with Lithium Ion batteries:
Nothing in cargo; only in carry-on.
Under 8g of lithium (under 100w like a Dionic 90), as many as the size & weight limits of airline carry-on rules allow.
Over 8g (such as a RED 140w), a maximum of 25g of lithium content -- in this case no more than two RED 140w batteries.
For Hytron batteries (NiMH), no restrictions.
You may be able to find cheaper options, but you will usually get what you pay for. I've seen batteries that were supposedly identical to A/B that didn't last for half the lifespan. Major manufacturers as well.
There are other brands that use both V-lock and A/B mount, but all of the batteries are "smart" batteries that talk to their chargers to regulate the cells. This means that no one's chargers will work with anyone else's batteries. I can name half a dozen other battery manufacturers of varying quality and I know that none of them will allow one to interchange batteries and chargers between manufacturers. I have not tested it but I'm guessing this is true for the RED batteries and chargers as well.
Mitch Gross
Abel Cine Tech