NiMH Battery News & Industry Insights

Charger and Battery Safety Standards: IEC 62133, IEC 60335 and the Certification of NiMH Charging Systems

2026-09-12

Safety standards governing NiMH cells, batteries and chargers: IEC 62133-1/62133-2 battery safety, IEC 60335 household-appliance charger safety, transport and EMC, and how charge profiles are validated against abusive and fault tests.

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Charger Efficiency, Standby Power and Energy-Efficiency Compliance for NiMH Chargers

2026-09-12

Energy performance of NiMH chargers: conversion efficiency by topology, no-load and standby consumption, maintenance-energy overhead, external-power-supply efficiency regulations, and designing chargers that minimize wall energy across the charge cycle.

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Current Sensing and NTC Thermistor Design for Accurate NiMH Charge Control

2026-09-12

The measurement chain behind NiMH charge control: sense-resistor and current-amplifier design, Kelvin connection, NTC selection and placement, signal conditioning and fault detection, and calibration for reliable -dV and dT/dt.

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Inside a NiMH Charge-Management IC: Architecture of the bq2002-Class Fast-Charge Controller

2026-09-12

Block-by-block architecture of a NiMH fast-charge IC using the TI bq2002 family: voltage and temperature sensing, termination logic, programmable timers, top-off and pulse-trickle outputs, status and the external components that configure it.

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Power Topologies for NiMH Chargers: Linear Versus Switching, Buck Converters and Current-Mode Control

2026-09-12

Choosing the NiMH charger power stage: linear versus switching regulators, buck and synchronous-buck topology, current-mode control for constant-current output, efficiency, heat and EMI trade-offs across consumer to pack chargers.

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High-Rate NiMH Packs for Cordless Power Tools: Charging for Burst Power and Fast Turnaround

2026-09-12

Charging high-rate NiMH power-tool packs: high discharge/charge capability, sub-hour fast charge demands, thermal and pressure limits of stick packs, charger-pack communication and the NiMH versus Li-ion tool-pack transition.

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Float, Standby and Backup Charging of NiMH: Guaranteeing Readiness Without Floating a Cell to Death

2026-09-12

NiMH in standby/backup service: float and trickle charging contrasted, why continuous float harms NiMH, intermittent readiness charging and pulse maintenance, self-discharge compensation, and design for medical, UPS and emergency systems that must be instantly ready.

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Solar and Off-Grid NiMH Charging: Variable Input, Maximum-Power Tracking and Pulse-Width Modulation Under an Unsteady Sun

2026-09-12

Charging NiMH from solar and off-grid sources: variable/intermittent input current, maximum-power-point tracking, PWM/pulse charge management, termination when no steady current exists, and why NiMH's tolerance suits remote-power duty.

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