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Battery quality?

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batteries are rated in mAh (milliamp Hour) based on a 377


Renata & Rayovac are rated at 28 mAh, Vinnic are a lowly 22 mAh Sony is rated at 29 mAh so are on paper the best 377's available.


The Seiko Seizaiken brand that cousins sell are a good buy, they rate at 28mAh the same as their Renata batteries but for a 377 are 4p (4.8p if you're not vat registered) per battery cheaper, but theoretically last the same length of time (these are what I've recently started fitting)

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