Battery Tender
Does it have different operating modes?




Should I plug it in with my Porsche 12V battery tender which looks the same as the CTEK one that Mercedes also sells?
https://www.mbpartsstore.com/oem-par...AaApM_EALw_wcB
Last edited by stealth.pilot; Mar 20, 2020 at 04:59 PM.
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Should I plug it in with my Porsche 12V battery tender which looks the same as the CTEK one
yes CTEK and Granite digital 25 watt both work with AGM batteries and are fully “Automatic”




Robert




I haven’t used a tender but started getting that message every time my car was parked a few days without driving. After a few weeks of the same, the dealer diagnosed it as a defective battery. They replaced the battery and some other glitches went away.



