Thank you very much seaharp1  It is very nice

I look something like that: Amazon.com: External Backup Battery, MEKO(TM) 10000Amh Infinity G6 [Anti-Dust Series] Power supply Pack - Portable Power bank Charger With Built-in Large LED Flashlight For Tablets, Netbook, Digital Cameras, DV Recorders, PSP, NDS, NDSL, Smart Phones, Android Phone...

THANK YOU FOR YOU ANSWER seaharp1; IN FACT I LOOK FOR AN External backup battery. What is what this kind(genre) of battery(drum kit) works with the calyx M

ANY ONE CAN HELP ME

Hello, I wish to know if Calyx M works, with an external charger. If yes, to pouver advise(recommend) me one thank you for your answers.

Thank you for your explanation very clear