This is what i know of the cells....
- a new protection PCB with a higher current threshold ( up to 5A +/- 0.5A );
- a removeable sticker label to reduce overall diameter;
- button tops on 17670 and 17500 for better contact without the need for spacers ;
- steel bottom plate for better wear protection from tailcap springs;
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Xray M18
MRS4-1
540 MRS4
Spektrumized
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