H2CAP Plus vs iBottle+: Cap or Complete Bottle?

“iBottle+ is our pick when you want a complete rechargeable bottle to fill, use and carry.” Sam, iBottle

iBottle+ is our pick over H2CAP Plus for Australian buyers who want a complete hydrogen water bottle they can use away from a USB power source. At A$199 with free Australian shipping, it combines the rechargeable generator and drinking vessel in one purchase, with a choice of 230 mL or 400 mL. H2CAP Plus takes a different approach: it is a small, externally powered generator cap for a compatible bottle. The buying decision is whether you want a cap to build around or a complete bottle to charge and carry. Product details and prices were checked on 25 September 2026.

H2CAP Plus vs iBottle+: the practical differences

Both use SPE/PEM technology. The power arrangement is the main practical difference.

What will you need to carry?

H2CAP Plus has no internal battery. Its manufacturer lists the cap at 53 g and says it can run from a suitable USB power bank, laptop or wall adaptor. That is a useful format if you already have a compatible bottle and normally prepare your water beside a USB source. The cap’s weight is only one part of the setup. For use away from a powered desk or outlet, you also need the bottle, cable and a suitable portable power source. With iBottle+, charge the bottle beforehand, then use its built-in battery for your hydrogen cycle. We prefer that simpler arrangement when moving between home, work and other everyday settings.

Will H2CAP Plus fit the bottle you own?

Check the exact bottle neck and supplied adaptor before ordering. H2CAP’s published specifications list a bottle-cap adaptor in the core package. The manufacturer also lists an optional 500 mL Tritan bottle. Reseller bundles can differ, so confirm what yours includes. iBottle+ arrives with its own matched vessel. Choose 400 mL if you prefer a larger serving or 230 mL for the compact design. The iBottle model and size guide makes that choice easy.

How should you compare the purchase price?

An overseas Aquacentrum listing showed H2CAP Plus at €197 when checked. That is a euro product price, not a confirmed Australian delivered total. Check currency, delivery and the included bottle or accessories for the particular offer you are considering. The iBottle+ package includes the bottle, charging cable, manual and gift packaging at A$199, with free Australian shipping. You can budget for the complete purchase without sourcing a separate drinking vessel.

What testing information can you check?

H2CAP’s manufacturer publishes a testing page referencing a JHPA report. There is testing information to review for both products. The published iBottle+ report records a mean of 4,050 ppb after one five-minute cycle for the tested 400 mL unit, using distilled water at 20°C and H₂Blue reagent titration. Read results alongside their stated method and conditions. Our recommendation here is about the complete bottle and everyday setup.

Our pick for a complete bottle: iBottle+

H2CAP Plus has a clear use case for someone who wants a small cap with no internal battery. For buyers who want their own rechargeable bottle ready to fill and use, iBottle+ is our choice. The 400 mL version also has a matching replacement glass kit available separately, so you can retain a working generator base when replacing its glass vessel. Choose iBottle+ 230 mL or 400 mL for A$199.