There is one issue with the ISDT OEM model... it does not come with the AAA adapter. So it can only charge a pair of AAA batteries.
The Kyosho model comes with an adapter tray that lets it hold four AAA batteries. Still not worth double or four times the price.
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Hopefully someone will 3D design one and sell or ISDT might start selling it. I'll keep an eye on Kyosho's website to see if they ever sell the adapter as a spare part (since it could get lost).
For now I'll just order some cheap AAA to AA converters from Amazon.
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