For neglected batteries, the OptiMate 4 starts the recovery mode, initially limiting the applied voltage at 16V, and if necessary for sulfated batteries, engaging TURBO recovery at a voltage of up to 22V at low current for up to 2 hours, to recover the battery to a condition in which it can accept a normal charge. Although I will admit that some features are nice to have, like the microprocessors in the Optimate and other battery chargers like those made by Battery Tender, Acumen and others. Our motorcycle batteries need to be charged to full voltage potential (14.2–14.5 volts for AGM’s and 14.0–15.0 volts for lead/acid batteries). And this, I feel, is the reason why our batteries don’t last as long as they use to when chargers use to fully and completely charge a battery. My thanks to American Classic Motors, Zeiglerville, Pennsylvania, for providing the OptiMate4 for testing and stepping up in wanting to actually know if the products they sell really do work.”

As per the instructions, I have the outlet disconnected before mounting the clamps on the battery; positive first, negative second. I plug in the outlet and I get a red test indication even if my battery steadily shows 12.67V for 2 days now. This is not suitable, you require a Litium charger, such as the TecMate OptiMate Lithium 0.8A Battery Optimiser(SAE) Considering that the Optimate 4 appears well designed and is priced within range of competitive brands, we think it’s worth considering. It should at least do what other smart chargers also claim to be able to do, if not also a few things more. Bulk charge stage: Charges at 0.8 Amps constant current until such time as the battery is normally able to crank the engine. SAVE : Low Volt Start of 0.5V + 2-step* desulphation recovery (*1-step low volt pulse save during CAN-bus mode).

OptiMate 4 Diagnoses, recovers, charges, checks and maintains

All the unique features found in each of the OptiMate battery saving charger-tester-maintainers are the most advanced in the world today, guaranteeing any vehicle or craft owner dependent on a 12V battery the ultimate in unsupervised long term battery care. The Optimate 4 works, it has a lot of lights, a two year warranty, and many different types of accessory harnesses. It’s been “Recommended by 8 major powersport manufacturers”, according to Tecmate. FEATURES: OptiMate 4 Quad Program tests before & after charging and can recover a ‘dead-flat’ lead-acid & lithium (LiFePO4) battery from as low as 0.5 Volts.

SAVE : Low Volt Start of 0.5V + 2-step* desulphation recovery (*1-step low volt pulse save during CAN-bus mode). There is no on/off switch for the Optimate 4. Plugging it in energizes it, and its lights go through a sequence before settling into a function with the task at hand. Has this a 3 year warranty & can you confirm its not a grey import, I see the model is tm430 not 432.. manythanks January 10, 2019 Will this optimiser work with a BMW R18 and what is the right cable option to chargeit? January 17, 2023 The Optimate4 did not revive either and in the case of the motorcycle battery, reported it as good and charged but it was not. Repeated cycles of charging (as suggested by their documentation) yielded no improvement. It gave up on the deeply sulfated battery.

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. I just have this feeling that there really aren’t any distinguishing characteristics that make one all that different from the other — beside the fancy cases and LED lights, that is. The charger can be connected by the supplied croc clips or hard wired to the battery via the fusedlead.

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. The Optimate 3 will be fine, unless you have a Lithium battery fitted. If this is the case, you will require a Lithium batterycharger. The charger also has a unique feature that allows it to automatically diagnose the battery's condition and adjust the charging process accordingly. This feature can help extend the life of the battery and avoid damaging it due to overcharging or undercharging. And it takes my all my car and motorcycle batteries up to 14.5 volts and holds them at this voltage while the charging amps are dropped to almost zero. This keeps a battery at full potential (14.0–14.5 volts) — not the 13.0 to 13.5 volts many chargers stop at. Compatible with modern BMW CAN-bus systemsThis unique multistage battery optimiser is specially designed for modern 12V starter batteries from 2.5 to 50 Amp-hours. With OptiMate 4 Dual Program you can now either charge the battery direct, or select the program to charge via the 12V port on CAN-bus equipped BMW motorcycles (using either the optional O2 or O9 accessory plug lead).A flashing red #7 or flashing or steady #6 and #7 LEDs together are indicators that a “significant problem exists.” 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). TecMate also makes load testers and other more sophisticated diagnostic equipment, and recommends suspected bad batteries – or vehicle wiring – may need further testing, as needed.