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Title: specialized purpose
Review: I have used these batteries primarily for 1) panasonic hand held dental irrigator and 2) to power my brake buddy module while motor homing and pulling a tow car. For application 1) I change batteries 5 times less often and get long lasting power and for application 2) this battery lasts several days instead of 1 1/2 days while on a trip. For these applications, both seem certainly more predictable and I suspect a little more economical (but with a caveat: Only buying in 'bulk' from Amazon since 4 batteries otherwise run 10 to 15$ over the counter.
