One of the more reliable has been the now discontinued 4728 charger. There is undoubtedly a sweet spot with optimal charging rate that I will eventually find.Īnother solution has been the use of Braun toothbrush induction chargers. I've been able to repeat this behavior several times to verify it wasn't some motion on my part that did it. If I allow the 7D48 to go into hibernation and place it on the charger unplugged, as soon as I plug it in, the watch comes out of hibernation. I was unable to get it to reliably charge the 5M85 GMT (more on that later), but it is apparently charging the 7D48 Auto Relay Perpetual as shown in the photo.
The Dakota REQ charger currently sells for $50.
The issue is finding the sweet spot on which to place the Seiko watch and it's sensitive to watch positioning. This charger will work with Seiko Kinetic. Been down that path already.ĭakota Watch made the REQ, a rechargeable watch without the Qi control, and still has an induction charger for it. Current rechargeable tea lights are not by induction, they're direct connection with USB chargers. If you find a working one at a Goodwill store or garage sale, it will probably be much less. Found some on ePrey and they're selling for over $100. They're out of production and have been for a number of years. One of the common and relatively easy solutions was the Philips Imageo rechargeable tea light set that has three induction charging pockets for the tea lights. I've got two of them, but unlike the Seiko charger, they're sensitive to watch positioning on them. There are alternatives to the now obscenely overpriced, out of production Seiko induction charger. You cannot get through any of the (going on) 28 pages of postings about kinetic induction charging without seeing at least one of them. The "cell phone charger" question is asked ad infinitum ad nauseam by countless who are too lazy to read the kinetic charging threads on forums such as WUS. Seiko's kinetics have no means to handshake with one. They are "Qi Compliant" with a handshake required from the device being charged to control the charging cycle. About $350 for a kinetic induction charger is outrageous.Ĭommon and very cheap cell phone and smart watch chargers will not work.
#Seiko model number yt02a a plus#
A recent ePrey listing went almost immediately for $300 plus $18 shipping, plus sales tax. While they were more available twenty years ago at somewhat reasonable prices, they quickly rose to over $200 ten years ago, and used ones easily sell for $300 now, if you can find one. It can fully charge any Seiko kinetic movement with a healthy cell in 3.5 hours or less, from zero energy charge. Its induction coil is off-center and the crown orientation for the movement family positions the watch's coil over it. A look at its top shows the orientation for each kinetic caliber family. Seiko made an induction charger for service center and watchmaker use, the YT02A. In other words, the location of it in my 5M85 is different from its location in my 7D48. Location of the movement charging coil varies by movement family. All Seiko's kinetics can be induction charged if you get the coil in a charger with the right frequency range in close enough proximity to the movement's charging coil. After the first few years, all the kinetics were fitted with Li-Ion. In these old ones, they're replaced with a Li-Ion made to fit it when serviced. Seiko quit using capacitors very early on with their kinetics. The Auto Relay Perpatual is made to run four years in hibernation mode when fully charged. They're made to be worn 12-16 hours per day, at least 5 days per week, preferably 7.The 5M85 is made to hold about 6 months charge in it's Lithium Ion battery when fully charged. If you don't wear them at least several times per week with a fairly active lifestyle, they drain down completely. With well over 100 watches they're a PITA to keep charged, a problem common to Seiko Kinetic owners with watch collections.
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