How do I choose the best replacement battery for my Honeywell Alarm Panel?
Size is also an important factor because the battery must be able to fit in the same space where the old battery was housed. Battery capacity is important as well, but it does not necessarily have to match the exact Ah of the previous battery. If you have an old 4.0 Ah UT1240, it can be replaced by a 4.5Ah UT1240. Capacity is often directly related to a battery's size.
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