Translate from Japanese :

It is a lineup as for two grades (RUBY and Diamond) by the
collaboration with the mastering mechanic ‘Is it a width?’.
Six cells, five cells, and four cells are additionally released to the
usage.

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Available in :

• 6cell A Class
• 6cell B Class
• 5cell A Class
• 5cell B Class
• 4cell A Class
• 4cell B Class

Source : hirosaka.jp