CTEK MXS 5.0 charging options - Engine, Transmission, Exhaust etc

I’ve just bought a CTEK MXS 5.0 battery charger. Not being au fait with battery jargon I’m confused as to which charging option to set with the MODE button, the alternatives are AGM or RECOND. The car is on its original battery and being a 2019 1.5 Sport Nav hasn’t got the i-ELOOP system. Any guidance / advice appreciated…

CTEK MXS 5.0 Battery Charger and Maintainer — Forman Motorworks

MXS 5.0

CTEK MXS 5.0 TEST&CHARGE - Ultraray Motorsports

The MXS 5.0 (part# 40-206) offers a unique eight-step approach to battery care. Fully automatic microprocessor controlled charger with built-in

CTEK MXS 5.0 New Test & Charge Battery Charger - CTEK 40-206

CTEK MXS 5.0 - How to use

The CTEK US 0.8 battery charger is tailor made for small utility and recreational vehicles. It is the smallest 12 Volt charger in the CTEK program. The charger is a compact and fully automatic 6-step charger for 12 Volt lead-acid batteries from 1.2 32 Ah. The state of the art technology is perfect for charging batteries in motorcycles jet skis ATVs and lawnmowers. A patented maintenance charging cycle is suitable for normal sized car batteries up to 100 Ah.