A practical selection guide: reading AA/AAA datasheets, balancing mAh against self-discharge and cycle life, matching cell grade to device drain, and pairing cells for packs without mismatch.
The materials science that turned NiMH from a battery you had to charge the night before into a pre-charged cell that retains most of its energy for years: alloy lattice, separator and manufacturing purity.
A compliance paper mapping the exact dossier a NiMH AA/AAA needs for the EU market: CE and the Battery Regulation, IEC 61951-2 performance, IEC 62133-1 safety, labels, due diligence and the battery passport timeline.
A selection-and-strategy paper: which portable applications convert first to rechargeable NiMH, how the regulation's collection targets change demand, and how to grade a consumer portfolio for a post-2030 European market.
Regulation (EU) 2023/1542 does not ban AA alkalines today, but its labels, durability rules and 2030 phase-out review point firmly toward rechargeable NiMH - and IKEA's global LADDA switch shows retail arriving early.
Paper C sets out the validation trail for feeding-pump batteries: dosing accuracy across battery life per IEC 60601-2-24, thermal control of warming, IEC 62304 software and IEC 62133 cell safety.
Paper B builds the per-bag energy budget of a mobile feeding pump, compares NiMH with primary and lithium cells, and explains why the low-battery alarm must fire before flow accuracy degrades.
An enteral feeding pump couples a microwatt-level peristaltic motor with a multiwatt heater. Paper A dissects that combined heat-and-motor load and its transport runtime under IEC 60601-2-24.
