It's very thoughtful of Toronto Hydro to help calibrate my APC UPS for the newly added external battery pack. It still has a pessimistic estimate based on previous outages when it only had the internal batteries.
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I've had no issues so far with the BR1500G. I bought it specifically because it's a passive UPS with solid passive voltage regulation, so it doesn't waste significant energy or create noise when it isn't charging or providing power in an outage.
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