STMicroelectronics Timekeeper/Snaphat Chips (and chargeless being from work!)
I found an interesting timekeeping IC and battery device on an APC SmartSlot 9606 management card...now let me tell you all about it! In all seriousness, I thought the idea behind its design was interesting. It would definitely make retrofitting an external battery easy as compared to reworking a Dallas Semiconductor DS1287, 1387 or related module. The APC SmartUPS 2200 in this video has a working inverter, but it appeared to have ruined its current set of batteries, wouldn't charge a new set in a timely fashion and also would not calibrate itself. (And yes, I tried every trick in the book to make it do so before giving up.) I was told to make it and the Tripp-Lite disappear, so I put the old batteries back in the APC and hauled them both off. If I fix it, I might splurge on the proper replacement battery kit or just build something like an external battery cart for it. Actually, the cart doesn't sound like a bad idea given how impressively heavy the fully loaded UPS really is. (You really could, to put it somewhat crudely, "drop a nut" lifting one of these. They weigh over 120 pounds fully loaded!) Big UPS units like these can be very useful. Their inverters are often tougher and will stand extended operation better than small, cheap units will. Note the red Anderson "Powerpole" external battery connector on the Tripp-Lite unit. (However, loading a Smart UPS 2200 up to near-maximum capacity is something I would not recommend. While the unit in question did not blow up ... Good Bargain Phv1800 Black Decker Prices Hercules Dj E2
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