Comparison · Battery packs and power banks
M18 battery or Cubot Rainbow battery Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.
In brief: Based on review measurements: Capacity: M18 battery (3670 mAh vs. 2161); Test current: M18 battery (10 A vs. 1).
Model M18 battery Milwaukee · 2021 Read review → Cubot Rainbow battery 2016 Read review → Capacity, mAh 3670 2161 Test current, A 10 1 Review conclusion Not recommended Recommended
Only in one review: Voltage 18 V (M18 battery); Energy 65 Wh (M18 battery); Resistance 15 mΩ (M18 battery); Weight 655 g (M18 battery).
M18 battery: The case and protection are decent, but capacity is about 4 Ah instead of the claimed 6 Ah; the author advises against buying it.
Cubot Rainbow battery: The battery measured 2161 mAh total and 2078 mAh usable by the phone, close to its stated capacity.
Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.
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M18 batteryMilwaukee · 2021Read review →
Cubot Rainbow battery2016Read review →