NiMH Battery News & Industry Insights

Mapping the NiMH Charge Protocol Space: How Depth, Rate and Temperature Jointly Set Cycle Life

2026-09-12

A quantitative design-of-experiments view of NiMH cycle life versus charge depth (overcharge %), rate, temperature and their interactions; how to read accelerated life data and specify a protocol to a cycles-to-80%% target.

More Details

Surface Films and Alloy Corrosion at the Hydride Negative: The Charge-Driven Ageing Frontier

2026-09-12

Microscopic ageing of the NiMH hydride negative: the catalytic surface oxide, pulverisation and disproportionation, element leaching and corrosion under overcharge, plus material advances (LaF3 coatings) and the charge conditions that preserve the surface.

More Details

Voltage Depression and the Memory Effect: What NiMH Charge Protocols Can and Cannot Cure

2026-09-12

The science of NiMH voltage depression (memory effect): crystalline and thermodynamic origins, shallow-cycle versus full cycling, why full discharge/charge reconditioning works and its costs, and how charger refresh logic should be designed.

More Details

How Overcharge Ages a NiMH Cell: Oxidation, Corrosion and the Charge-Protocol Lever

2026-09-12

The degradation mechanisms of NiMH overcharge: positive-electrode swelling and gamma phase, hydride-alloy oxidation and corrosion, separator/electrolyte oxidation, and how charge current, termination and overcharge duration set cycle life.

More Details

Data-Driven Charging: Machine Learning for NiMH SOC, Charge Termination and Adaptive Fast Charge

2026-09-12

Machine-learning and neuro-fuzzy approaches to NiMH charging: ANFIS multi-stage constant current, learned SOC/thermal models and termination classifiers; what data they need, how to validate them safely, and their limits versus physics observers.

More Details

Equivalent-Circuit Versus Electrochemical Models for NiMH Charging: Choosing the Right Fidelity

2026-09-12

A structured comparison of NiMH charge models - empirical, equivalent-circuit (Thevenin/Randles), reduced electrochemical and full physics-based (P2D-style) - by accuracy, computation, calibration and control suitability, with a selection framework.

More Details

Coupled Electro-Thermal Modelling of NiMH Charge: Predicting Heat, Voltage and Acceptance Together

2026-09-12

Building a coupled electrical-thermal NiMH charge model: equivalent-circuit voltage with temperature-dependent parameters, lumped heat generation and transfer, two-way coupling, and its use in current planning and thermal runaway margin assessment.

More Details

Internal Resistance and Impedance for NiMH Charge Control: From DC Pulses to Electrochemical Impedance Spectroscopy

2026-09-12

Measuring NiMH internal resistance during charge: DC current-interrupt and 100 ms hybrid pulses, the Randles EIS interpretation (ohmic, charge-transfer, Warburg), and how resistance trends inform current limits, termination and health.

More Details

Language