Would this work on a 2005 bmw1200 gs. Does it keep battery topped uo if not using

Yes it will, and canbus Optimates can be switched to normal operation too to charge-up other stuff, often useful

Hi - is this the correct one for a Harley Sportster? Thanks

Hi - the Optimate will do bikes with Canbus wiring (my BMW) and can switch to keep charging via other wiring systems as well. The instructions explain how to switch from one system to another as you need, not sure which will apply to Harley but it does both anyway.

Is this compatible with a 2019 tiger 1200?

Providing you have a din socket you can charge the bike through then it will work.

I assume i can use this on 2018 f850 gs in can-bus mode?

I'm using this on my 2019 R1250RS on can- bus mode successfully.

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OptiMate 4 Dual BMW

Product ID: 56615235

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Details

Brand
Optimate
Colour
Black
Item weight
901 Grams
Output voltage
12 Volts
Input voltage
12 Volts

🔄2-stage desulfation recovery

🔋1A smart charging current

⚙️Dual-mode BMW CANbus & standard

Description

🔋 Power up your ride with precision and care!

READY TO USE ACCESSORIES - Includes O9 DIN plug and O4 clamp cable for flexible bench or on-bike charging.
SMART 2 STAGE DESULFATION - Extend battery life by breaking down sulfate crystals with an intelligent recovery process.
VERSATILE BATTERY SUPPORT - Optimized for AGM, MF, STD, GEL, and spiral cell batteries from 2Ah to 50Ah—one charger to rule them all.
ADVANCED LOW VOLTAGE RECOVERY - Kickstart even deeply discharged batteries with a 0.5V low voltage start feature.
SEAMLESS BMW CA NBUS COMPATIBILITY - Switch effortlessly between BMW CANbus and standard charging modes for ultimate battery care.

The OptiMate 4 BMW CANbus is a 12V automatic battery charger and optimiser designed specifically for BMW motorcycles. It supports a wide range of battery types (AGM, MF, STD, GEL, spiral) from 2Ah to 50Ah, featuring a 1A charging current, dual-mode CANbus compatibility, and a 2-stage desulfation recovery system to revive and maintain battery health efficiently.

Specifications

Manufacturer	Optimate
Brand	Optimate
Package Dimensions	28 x 16.3 x 6.9 cm; 901 g
Item model number	TM352
Manufacturer part number	TM352
Amperage	1 Amps
Item Weight	901 g

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