OptiMate 4 CAN-BUS Edition

MSRP $98.95

8-step 12V 1A sealed battery saving charger & maintainer

OptiMate 4 CAN-bus edition, the most advanced 12V battery saving charger for your high performance or touring BMW motorcycle – Most popular BMW motorcycle charger world-wide!

  • Includes the OptiMate adapter/ extender (O-09) that connects directly to the 12V DIN socket on BMW motorcycles.
  • Automatic KEY-LESS activation and continued 24/7 safe long-term maintenance – Connect and forget no more battery problems!
  • Dual Charge Program – select alternate ‘direct to battery charge mode’ when necessary to SAVE a ‘dead flat’ battery from as low as 0.5V.
  • Advanced and accurate testing before and after charging.
  • OptiMate’s 24-7 smart maintenance guarantees more battery power, longer battery life!

Available models: All OptiMate battery chargers listed below accept global input of 100-240Vac 50-60Hz, only the power plug TYPE is different to comply with national / regional electrical safety laws.



No, you can also connect directly to the battery. You will need to use the clamps or even better, use the O-01 eyelet cable which can be fitted permanently to the battery.

A new OptiMate 4 CANbus is programmed from the factory in the CANbus program. You can use the OPtiMate 4 in this program if you want to charge/maintain your battery over the DIN socket of your BMW.

The voltage that can be sent over the CANbus system is limited. It's recommended you to connect directly to the battery with the clamps or the eyelet cable and switch to the standard program. The standard program will start from 0,5V to recover your battery.

No, but if you have one, You can use the Optimate 4 in the standard program, to charge/maintain directly onyour battery .

LED's 3 and 4 flash every 3 second to indicate the charger is in CAN-Bus mode
LED's 3 and 4 don't flash when the charger is in standard mode
(see also 2nd page of the manual)

STD, AGM and GEL 12V lead-acid batteries used for engine start & deep cycle applications. (Link: Learn here about batteries, this will be at www.optimate1.com/batteries).
For batteries from 3Ah to 48 Ah for 24-7 battery maintenance. Can recharge batteries up to 24Ah within 24 hours.

Charge time on a flat but otherwise undamaged battery: a 12Ah battery should take no more than about 12 hours to progress to the self-discharge check. Deep-discharged batteries may take significantly longer, a full charge may not be achieved within the hour charge safety limit. In this case.


Similar models with different features.

SKU: TM-35x Category:



In store packaging


MSRP = Manufacturer Recommended Retail Pricing is displayed above. (Currency selector > top right).
Price in EURO and GBP include VAT of 20%. VAT in your region may differ. Price in USD and CAD do not include sales tax.

TecMate do not sell product directly to the consumer. Find your nearest retailer by selecting the appropriate model below.


SKU TM-351

SKU TM-351

SKU TM-350

SKU TM-352



IDEAL FOR: AGM, GEL & STD 12V batteries from 3 – 50Ah

CHARGING AMPS: 1A (constant current)

CHARGING VOLTS: nominal: 12V range: 0.5V - 14.4V

OPERATION:  Fully automatic


FEATURES: Automatic KEY-LESS activation and continued maintenance until charger is disconnected. Safe low voltage pulse desulphation.

USE: Indoor / Outdoor  (lowest temperature: -40°F / -40°C).

INPUT: Global (100-240V 50-60Hz), high efficiency (CEC listed).

STYLE: Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector.

SAVE : Low Volt Start of 0.5V + 2-step* desulphation recovery (*1-step low volt pulse save during CAN-bus mode).

SAFE: No risk of overcharging. Totally safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintenance. Automatic shut-down if short-circuited or battery disconnected. 3-year limited replacement warranty.   OptiMate 4 CAN-bus edition is delivered with program 2 pre-selected.

INCLUDED: BIKE 180° plug adapter-extender & standard battery clip set

WARRANTY: 3-year limited replacement warranty.