The BMX Resource Hub

Insights on battery safety, solid-state power, and smarter mobile charging,
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Signs a Power Bank Is Failing: Swelling, Heat, Smell
battery failure

Signs a Power Bank Is Failing: Swelling, Heat, Smell

Six warning signs your power bank is failing: swelling, abnormal heat, chemical smell, visible damage, capacity collapse, and erratic charging. What each one means and what to do.

100WhMan seated on an airplane holding a BMX SolidSafe Air power bank, illustrating safe carry-on power for air travel

Safest Power Bank for Air Travel in 2026: SSB Chemistry, the 100Wh Limit, and Why Cabin Risk Is Different

The safest power bank for air travel in 2026 is semi-solid-state, under 100Wh, and CCC-certified for China flights. Here is why chemistry matters at altitude and which BMX SolidSafe banks check eve...

battery management systemPower bank protection circuit board (PCM) with B+/B-/P+/P- terminals and SC8205A battery protection IC, glowing turquoise traces on dark background

What "Protection Circuits" Actually Do in a Power Bank

Protection circuits guard power banks against overcurrent, overvoltage, shorts, and overheating. Here is what each of the 7 layers actually does, where they fail, and why the chemistry underneath t...

battery safetyBMX SolidSafe 3-Bay charging dock with SolidSafe power banks on a nightstand next to a bed, overnight charging setup

Can You Charge a Power Bank Overnight? What's Safe, What's Not, and What Actually Matters

Yes, you can charge a power bank overnight. The real question is not whether you can, it is what chemistry is inside the bank and what surface you charge it on. A semi-solid-state power b...

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airline safeCross-section illustration of a semi-solid-state battery showing reduced liquid electrolyte

Semi-Solid-State Batteries Explained: What "Less Liquid" Actually Changes

A semi-solid-state battery uses an electrolyte with significantly less liquid than a conventional lithium-ion cell. That single difference changes what happens when a battery fails -- red...

Battery SafetyThe safest power banks of 2026, ranked by battery chemistry and certification

Safest Power Banks in 2026: Semi-Solid-State Buying Guide

BMX SolidSafe tops our pick for safest power banks in 2026. Semi-solid-state cells, drill test footage, every competing SSB option compared.

Battery SafetyBMX SolidSafe Air, the thinnest MagSafe power bank enabled by semi-solid-state cells

Why Semi-Solid-State Batteries Make Thinner Power Banks Possible

Why Semi-Solid-State Batteries Make Thinner Power Banks Possible Your phone is thinner than it was three years ago. Your laptop is thinner. Even your...

Battery SafetyAirport terminal scene, 2026 airline rules for carrying power banks in carry-on

Power Bank Rules on Planes 2026: Latest Updates, United, IATA Limits, Airline-by-Airline

Updated April 2026: United Airlines now bans overhead bin storage of power banks (effective March 1). The 100 Wh carry-on limit, IATA DGR 67th Edition, in-flight bans across 20+ airlines, and full ...

Battery SafetyBMX SolidSafe power bank charging on a bedside pillow, safe overnight charging scenario

The Complete Guide to Power Bank Safety

Power bank safety isn't just about certifications - it's understanding what's normal, recognizing danger signs, and choosing battery architecture that reduces thermal runaway risk at the chemistry ...