I have one of the first V3 cellphones ever offered by Cingular. The original battery had almost totally died two years back, but there was nothing what so ever wrong with the phone itself.When I decided to hold off for lower cellphone prices, when my AT&T; Tilt began acting up, I decided to just put my 2005 V3 back in service - and bought this battery through Amazon from "The OEM Shop" to power it. The battery has 70 millamperes more power than the original, and after about two recharges I had no trouble noticing the old V3 had better standby and talk times than the original battery ever offered while in use around my home.After about two weeks, prices dropped and I bought a new Tundra for the 3G capabilities alone - until the 2010 cellphones start appearing (I use AT&T; Navigator - a 3G service). I also keep a family member supplied with a more recent V3 phone - a V3i iTunes phone I gave them several years back. That phone was still working well with its original BR50 battery supplying good standby times. But since I no longer needed my V3, I swapped this new battery into their phone. Within a few days they commented the phone was now staying charged much longer, whether in standby, or calls and browser use - even longer than it had originally with the factory supplied BR50 battery.Rest assured, this new SNN5794 battery was sealed and factory fresh as received. Its designation is BR56, and it is a Motorola battery and not some cheap knockoff with poor performance. The old V3? Well, it's sitting idle once more until needed again. I never buy the monthly insurance, and won't so long as I always have a good cellphone I can fall back on. If needed, I'll buy another of these batteries. They want $40 for the less powerful ones locally. There's no doubt where I'll buy again. The purchase experience with this product has been excellent, and proves it pays to shop wisely.***NOTE***While more powerful than many others, this battery doesn't require replacement of the OEM battery door. (my OEM V3 battery was 710 millamperes and the OEM BR50 in the V3i was 760 millamperes)