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Our original lasted about 7 years
Sorry, there was a problem. Please try again later.Thank you for your interest in our products. Usually the internal battery would need replaced every 3 to 5 years. However just note this model doesn't have an user replaceable battery. If you want an user replaceable battery you could go with the BN650M1 instead. The UPS itself usually last around 7 to 10 years.
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