4500 mAh power bank

magnesium and iron which a)

you can purchase one HERE

or together for the full 1800 W of additional heating power

500 LITRES (depending on water quality)Granular activated carbon filters are not the right filter for filling tanks

Narva 12V Surface Mount Accessory Socket CCAONLINE 4500 mAh power bankThe Narva Heavy Duty Surface Mount Accessory Socket features a dustproof cover and modern surface mount plastic housing. compatible with exterior applications, mount the housing with the opening facing down. Narva Surface Mount Accessory Socket Specifications: Current Draw: Amperage rating 20A at 12V, 10A at 24V Part No. 81025BL