Two (2) desulfated wet cell lead acid 10 ah & 14 ah batteries were hooked up in an attempt to desulfated these batteries and revive them. Sulfation of Batteries starts when specific gravity falls below 1.225 or voltage measures less than 12.4 (12v Battery) or 6.2 (6 volt battery). Sulfation hardens the battery plates reducing and eventually destroying the ability of the battery to generate Volts and Amps.” FEATURES: Automatic KEY-LESS activation and continued maintenance until charger is disconnected. Safe low voltage pulse desulphation.

Voltage retention test: is conducted for 30 minutes during which no charge current is delivered, with 5 possible test results indicating the battery's general state of health. The pre-qualification test can be used to detect batteries that may hold a charge initially, but lose charge overnight. They seem work just as well as the old-fashioned Battery Tender, but I’m wondering what the real difference is with some of them. CAN-bus program: the KEYLESS activation program guarantees automatic re-opening of the connection even with the ignition turned off. If not, he should be prepared to shell out 50% of list price to replace his Battery Tender under the Del Ray warranty program – or about the street price at a deep discounter.Once the battery’s current demand is proven able to remain below 0.2 amps at 13.6 volts –”which is consistent with a battery that has accepted as much charge as its basic conditions allows”– the microprocessor switches to a “voltage retention test” for another 30 minutes. This is alternated with a “maintenance” charge – for as long as the battery is hooked up. If one wants to maximize battery life, the cycling that Yuasa does is very desirable. Let’s think about this, too: Of all of the manufacturers selling battery maintainers, how many of them actually design, produce, and sell lines of batteries? I count one: Yuasa. So I leave you with mixed feelings on the Optimate 4. There’s nothing at all wrong with it, it seems very well made and solid and I like the quality of the hardware and connectors it is supplied with.

Once connected to a battery, the charger’s brain first senses voltage. If the battery has more than 2 volts, it will begin analyzing the battery. If less than 2 volts, it won’t even try. The red wire should be connected to the positive terminal. If you copy and paste the link below you can view the instructions. And this is to charge a battery to its full potential; not 80% or 90% as this leads to short battery life and pre-mature dead batteries. Editor’s Note (7/09): Here’s another take on the OptiMate 4, written by Mike Cecchini of MRC Engineering in Bethesda, Maryland U.S.A.: Personally, the only motorcycle battery charger features I’m really interested in are its ability to keep a maintenance charge and last for years while doing it, because I never let my batteries run down to the point where they need to be raised from the dead anyway.As a computer consultant, I see this a lot in residential situations here in Florida — after 15 – 30 years of duty, the 12′ of copper grounding rod that the electrical system ties to is so corroded that it no longer does a good job of conducting the ground-to-earth connection (or the grounding strap itself where it connects to the ground-rod).

If you bypassed the desulfating mode and left the battery connected to a vehicle, and it gets a failing grade, TecMate points out that it could be getting pulled down by problems in a vehicle’s electrical system that are unrelated to the battery. In case you think I have a systemic problem, you should know that I don’t live on the Tundra with my only electricity being provided by a cranky old generator. I live on the power grid with buried power lines. Enhanced testing and safety – 48 hour charge timer, detection of a battery with a shorted cell during charging, 12 hour test and test at connection. On the other hand, I can also see where a techie gearhead might like all the bells and whistles on the Optimate 4. I mean it works, for sure, and it works beautifully and it looks very cool and it has all sorts of lights and things.Can it be used on a Royal Enfield Himalayan and does the ignition need to be switched on towork February 7, 2023