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On Wed, Nov 27, 2024, at 10:07 AM, Dan Langille via Nut-upsuser wrote: > On Tue, Nov 12, 2024, at 11:49 PM, Harlan Stenn wrote: >> I check the spec'd net weight of the batteries with the actual weight of >> each arriving battery. > > On the website, they say 5.73 pounds (5 lbs 11.6 oz). > > Two of the batteries were 5 lbs 11 oz. The rest were all 10, 9, or 8 oz.

...ge rate. I used to use standard rates of 1 A, larger for bigger bateries, smaller for little ones. This is contrary to industry norm which is a 20h rate. Then I had batteries I wanted to return, and realized I really needed to test at the specified rate. So now i do 20h rate, which which means nameplate capacity / 20h, so 450 mA for a battery specified at 9 Ah. With end-of-test at 10.5V, which you'll find on the spec sheet. Of course, the actual time will not be 20h, and one could attempt to find the rate which leads to 20h, but I don't think that's a sensible thing to do. Basic...

On 11/12/2024 10:58 AM, Dan Langille via Nut-upsuser wrote: > Hello, > > nut recently told me that the batteries need replacing in my Eaton 5PX2200RT (ups) and 5PXEBM48RT (external battery pack). According to my notes, it has been just over 4 years since I installed them. Looking at on-line sales, these seem to use batteries in a pre-packaged plastic shell. I don't recall if