nigel8210 284 3rd Gear May 17, 2019 I have changed my AGM battery after 2.5years, 70Ah Varta once Now the start/stop function fail again after 2 years, I thought AGM batteries can last longer than conventional type Does it mean now my battery is weak again presumably that's the cause for the start/stop failure recently? Ride : W205 C200 year 2014 ↡ Advertisement Share this post Link to post Share on other sites
Ysc3 20,720 Twincharged May 17, 2019 avg lifetime of a car batt usually 2 years. and stop/start function not helping. most ppl will disable it as they say it hurts the transmission. 2 Share this post Link to post Share on other sites
Beregond 29,549 Twincharged May 17, 2019 I have changed my AGM battery after 2.5years, 70Ah Varta once Now the start/stop function fail again after 2 years, I thought AGM batteries can last longer than conventional type Does it mean now my battery is weak again presumably that's the cause for the start/stop failure recently? Ride : W205 C200 year 2014 Benz orginal battery if fail 2 years i think very fast , normally last 3-4 years. u can try check the auxiliary battery . (normally this spoil got the auxiliary battery malfunction) error 2 Share this post Link to post Share on other sites
Elmo 576 4th Gear May 17, 2019 Maybe alternator weak and not charging up the aux battery? Share this post Link to post Share on other sites
Blueray 109,513 Hypersonic May 17, 2019 I have changed my AGM battery after 2.5years, 70Ah Varta once Now the start/stop function fail again after 2 years, I thought AGM batteries can last longer than conventional type Does it mean now my battery is weak again presumably that's the cause for the start/stop failure recently? Ride : W205 C200 year 2014 do you use start stop all the time and have short driving journies ? Share this post Link to post Share on other sites
nigel8210 284 3rd Gear May 17, 2019 do you use start stop all the time and have short driving journies ? short driving journies maybe But all the while the first thing I do is to OFF the start stop function upon starting the car as I hated it Now it will always be YELLOW and wont turn GREEN to activate the function in a way, its good I don't have to press the OFF button anymore But I am worried and concerned if the battery is weak as I plan to go for a road trip in Malaysia soon PS: Not cheap leh, the last change for the 70Ah Varta was like $400, and its those outside tyre battery workshop Share this post Link to post Share on other sites
Blueray 109,513 Hypersonic May 17, 2019 short driving journies maybe But all the while the first thing I do is to OFF the start stop function upon starting the car as I hated it Now it will always be YELLOW and wont turn GREEN to activate the function in a way, its good I don't have to press the OFF button anymore But I am worried and concerned if the battery is weak as I plan to go for a road trip in Malaysia soon PS: Not cheap leh, the last change for the 70Ah Varta was like $400, and its those outside tyre battery workshop If you are planning to drive to malaysia then I would suggest checking the battery and changing if necessary. Conti cars are a bit sensitive to weak battery and may throw up other issues. Do confirm if yours is just one battery or one main battery + one aux battery. For those models with aux battery, should be the aux battery powering the auto start stop. 1 Share this post Link to post Share on other sites
No_worries 3,097 6th Gear May 17, 2019 I won’t be able to comment on other makes. I just change my battery on my car (2 years old) as the start stop didn’t work any more. Once it is changed, start stop works normally . In our climate and short trips, I suppose car batteries won’t last . Share this post Link to post Share on other sites
Discoburg 58,641 Supersonic May 17, 2019 Bring the key fob next to the start/stop button. Does it start up the ride? Share this post Link to post Share on other sites
Kb27 30,508 Supersonic May 17, 2019 Start stop batteries don't seem to last long, due to the extra stress on it. The battery has to start the engine many more times, compared to a normal battery starting cycle. Share this post Link to post Share on other sites
Hamburger 88,045 Hypersonic May 17, 2019 The battery needs to be properly charged periodically. Depending on the car alternator is not enough. That's why I have an external battery charger to help me refresh my battery every few months. 1 Share this post Link to post Share on other sites
Old-driver 1,772 5th Gear May 17, 2019 Same problem... went to see and see to check but they say no issue so battery wasnt changed. drove home and still haven't seen green today yet. 1 Share this post Link to post Share on other sites
Solar 10,559 Turbocharged May 18, 2019 Start stop batteries don't seem to last long, due to the extra stress on it. The battery has to start the engine many more times, compared to a normal battery starting cycle. I remember reading somewhere that cars with auto SS will require special kind of battery, not those normal ones due to the reason u mentioned. Anyway, mine konked after less than 2 years. Not sure if it's exactly due to the auto ss.. I have car camera recording 24x7 that may cause excessive drain. 1 Share this post Link to post Share on other sites
Beregond 29,549 Twincharged May 18, 2019 Start stop batteries don't seem to last long, due to the extra stress on it. The battery has to start the engine many more times, compared to a normal battery starting cycle. start stop or EFB battery have more crank cycle. suppose to last longer then normal battery .(under same useage condition) if your car is starting more cos of the stop start function , could be driving habit, or just off the function. Share this post Link to post Share on other sites
Kb27 30,508 Supersonic May 18, 2019 (edited) I remember reading somewhere that cars with auto SS will require special kind of battery, not those normal ones due to the reason u mentioned. Anyway, mine konked after less than 2 years. Not sure if it's exactly due to the auto ss.. I have car camera recording 24x7 that may cause excessive drain. SS requires either AGM or EFB battery. Car camera draining battery 24x7 should have benefited from the above, as compared to regular battery. But then this EFB tech is quite new, so it remains to be seen how effective it is. AGM is not new tech, but it suffers from heat, unless placed in a cool location. Imo, the lack of water in AGM allows it to be heated directly, so is less lasting. Edited May 18, 2019 by Kb27 1 Share this post Link to post Share on other sites
ER-3682 9,016 Turbocharged May 18, 2019 The battery needs to be properly charged periodically. Depending on the car alternator is not enough. That's why I have an external battery charger to help me refresh my battery every few months. Is it a Normal Battery Charger.?Thinking of buying 1,can shoot a picture of your Charger.? Share this post Link to post Share on other sites
flashbang 10,297 Turbocharged May 18, 2019 2 years very good already, mine 1.5 and it's dead. 1 Share this post Link to post Share on other sites
Kb27 30,508 Supersonic May 18, 2019 (edited) Is it a Normal Battery Charger.?Thinking of buying 1,can shoot a picture of your Charger.? AGM requires a lower charging voltage, typically around 13.5V Regular lead-acid battery voltage charging voltage is higher, around 14.4V If you place a AGM in a car with alternator putting out 14.4V, it tends to overheat and don't last very long. So be careful with the charging voltage. Edited May 18, 2019 by Kb27 ↡ Advertisement 1 Share this post Link to post Share on other sites
