No not only the price ! The one for 85.- is still for boats , tractors and campers ( other battery types ) ! The one for 79.95 is only for cars and motorbikes. I hope I could help you. Mfg .
As an alternative, I can recommend the following models
https://www.galaxus.ch/de/comparison/10259247-5684703.
Please note that these two items cannot test the battery. To reliably test a battery (voltage, starting power, alternator function), the device must be connected for a longer period of time and perform measurements under load. Mobile boosters are intended for short connections, not for detailed analyses.
A battery connection cable is included in the scope of delivery, together with a cigarette lighter cable, two connection cables and a storage bag. A separate cable therefore does not need to be purchased separately. This applies to the charger with the designation MXS 5.0 (CH version) (12V, 5 A) from Ctek.
The charger maintains the battery's threshold value by switching to maintenance mode when it reaches full charge. This mode prevents overcharging and ensures that the battery is not charged further to extend its life. The patented float/pulse trickle charge ensures that the battery is maintained at a safe level without overcharging it.
Only the yellow indicator next to the motorbike symbol should light up. Then everything fits.
Do not charge on AGM and if it is a new battery, do not charge on reconditioning.
When charging gel batteries, make sure that the charging voltage does not exceed 14.4 V, as air bubbles can form in the gel electrolyte structure if this voltage is exceeded, leading to irreversible damage to the battery.
In principle, this is not a special EFP or EFB charger. With this type of battery, the final charging voltage should not be higher than 14.6 volts. In order to be able to use this charger sensibly, it should be charged like a normal lead-gel or wet battery (simply not in AGM mode). In this way, a final charge or float voltage of 14.4 volts is achieved. This works perfectly in practice. I do it myself every winter with a seasonally used vehicle :-)
Apart from 5 (CH) vs 2 (EU) years warranty, I couldn't really find anything. It doesn't really matter, it's a 12V charger that can charge with 5A. It takes about 1 day to fully charge an empty battery on a car, trickle charge is great and a partially discharged battery is charged in a few hours. We have 3 CTEK MXS 5.0 and they have never had any problems.
Good day
Regarding the first question: Yes, that is so. I have both units and the alternator test is the difference. Otherwise, they both do an excellent job.
Unfortunately, I can't say anything about the second question. I used to have a separate booster, but I've never needed it since I got the Ctek (the battery there is probably gone now).
With AGM, the negative terminal (depending on the vehicle, it can also be the positive terminal) should be connected to the chassis and not directly to the battery. It is best to check the vehicle manual.
Why do you want to connect to the CAN bus? There is only voltage on it when the ignition is switched on, plus it is not suitable for charging the battery.
No, a cable for this is not included. There is a cable for permanent installation and a cable with clamps. Both have the Ctek connector at the end (see picture 6).