NiMH Battery News & Industry Insights

Testing and Type-Approving Marine AIS and GMDSS Handheld Batteries: IEC 60945 Environmental and EMC Tests, IEC 61097 and IEC 63269 Performance Tests, the MED Wheel Mark and Sealed NiMH Cell Qualification

2026-10-25

Paper C: the type-approval and certification chain for marine AIS and GMDSS handheld batteries: SOLAS III/6, IMO MSC.149(77)/MSC.246(83)/MSC.570(109), IEC 60945 environmental and EMC tests (dry heat, damp heat, cold, shock, drop, vibration, spray, immersion, salt mist, ESD 8 kV air/6 kV contact), IEC 61097-12, IEC 61097-14 and IEC 63269, ETSI EN 302 885/EN 300 338-5, the MED wheel mark (2014/90/EU, (EU) 2026/1434), IEC 61951-2, IEC 62133-1, IEC 63115-2 and UN 3496/IATA A199 for sealed NiMH.

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Sizing Sealed NiMH Packs for Marine AIS and GMDSS Handheld Radios: Chemistry, Cell Count, Capacity and Cradle-Charge Design for Daily VHF and Portable AIS Use

2026-10-20

Paper B: size and design a rechargeable sealed NiMH pack for daily and training marine handheld VHF and portable AIS radios, keeping the dated primary-lithium distress battery of IMO MSC.149(77)/IEC 61097-12 and AIS-SART IEC 61097-14 separate. Clearly illustrative sizing from the 1:9 (6:6:48) duty and 8 h/24 h targets, 6S/8S cell count, high-rate AA/SC choice, cold-pulse voltage margin, -dV/dT and 0.1C cradle charging, IPX7, and the IEC 61951-2, IEC 62133-1, UN 3496 (IATA A199) compliance path.

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Are NiMH Batteries Allowed in Checked Baggage? Air Travel Guidelines | Weijiang

2026-10-15

Planning to fly with rechargeable batteries? Here's the clear answer for NiMH (nickel metal hydride) cells in carry-on and checked baggage, plus the one lithium rule travellers most often miss.

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Powering Marine AIS and GMDSS Handheld Terminals: The Operating Environment, Radio Load Profile and Battery Working Principles Behind Survival-Craft VHF, AIS-SART and AIS-MOB

2026-10-15

Paper A: understand the battery load profile inside marine AIS and GMDSS handheld terminals - survival-craft two-way VHF (IEC 61097-12, IMO MSC.149(77), 8 h at 6:6:48), AIS-SART (IEC 61097-14, 96 h) and AIS-MOB (48 h) on the 161.975/162.025 MHz ITU-R M.1371 channels. Covers the -20/+55 C environment, immersion, drop and glove operation, the standby-receive-GNSS-transmit power architecture, and where primary lithium versus rechargeable sealed NiMH (IEC 61951-2, IEC 62133-1, UN 3496) fit.

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Testing and Certifying Sealed NiMH Packs for Track Geometry Trolleys: Type Testing, Vibration and EMC Qualification, and the UN 3496 Transport Regime

2026-10-14

Paper C: build the test and certification plan for a sealed NiMH pack in a portable track geometry inspection trolley. Qualify cell performance to IEC 61951-2 (capacity, 0 C discharge, retention, endurance, resistance), safety to IEC 62133-1, climate, vibration, shock and fall to IEC 60068-2, ingress to EN 60529, railway vibration to IEC 61373, EMC to EN 61326-1 and EN 50121-3-2, then manage ageing, production acceptance, UN 3496/IATA A199, IMDG, ADR and EU 2023/1542.

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Visit Weijiang Power at the 140th Canton Fair

2026-10-14

Meet Weijiang Power at the 140th Canton Fair - Area D, Booth 17.2 K18, October 15-19, 2026. Discuss NiMH & Li-ion OEM/ODM cells and custom packs, request free samples, and get a face-to-face engineering review.

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Sizing Sealed NiMH Packs for Track Geometry Trolleys: Chemistry Selection, Series-Parallel Capacity, and Charge-Thermal Design for Portable Rail Geometry Measurement

2026-10-13

Paper B: turn a track geometry trolley's battery load into a sized sealed NiMH pack. Build the requirement sheet (voltage rail, baseline and pulse current, longest possession, cold and hot limits), compare lead-acid, NiCd, NiMH and lithium-ion, choose high-rate cells and the series-parallel count, apply end-of-life, low-temperature and depth-of-discharge derating, and define -Delta V/dT/dt charging and thermal design under IEC 61951-2, IEC 62133-1 and UN 3496.

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Track Geometry Inspection Trolleys: The Operating Principle and Battery Load Profile Behind Portable Rail Geometry Measurement with Sealed NiMH Packs

2026-10-12

Paper A: how a portable track geometry inspection trolley works and the battery load it needs. Pushed or motor-assisted units work in short possessions, fusing laser rail sensors, IMU, total-station/GNSS and odometry to record gauge, level, alignment, cant and twist under EN 13848. The pack holds a steady sensor-and-logger baseline with assist, cold-start and upload peaks while protecting uninterrupted logging; sealed NiMH gives cold tolerance, vibration resistance and simple UN 3496 shipping.

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