CoMotion LA Micromobility event vehicle roundup: fun ways to get around the city Madrid bans e-scooters on public transport Brentwood commissioners evaluating electric bike safety - Yahoo E-scooter company Bird files for bankruptcy Woman on e-bike killed in collision with pickup truck in Greensboro, officers say - WXII From dating apps for charging stations to diesel scents for e-trucks – the industry’s April Fools’ jokes Rivian spins out a new micromobility startup called Also with $105M from Eclipse Stoneham police hold E-bike safety meeting to raise awareness - boston25news.com NJ Enacts Sweeping E-Bike Safety Law Amid Rising Accident Concerns - TAPinto Charlottesville to award another 36 e-bike vouchers - WVIR Rivian spinoff Also raises another $200M to build e-bikes and more Fast growth, few rules: Coastside struggles to regulate e-bikes - Coastside News Gain a budget-friendly means to travel for up to 40 miles with Hoverfly's Ourea e-bike down at $425 - 9to5Toys AliExpress Has a 750W Peak 36V Adult Electric Bike for Just $277 With Free Delivery - IGN As an e-biker ripped through Macomb Township, a police drone was in pursuit - The Detroit News The startups rolling out of Europe’s early-stage micromobility scene Consolidation continues in micromobility as Cooltra snaps up Cityscoot Child injured in e-bike crash in Upper Allen Township: police - local21news.com Confused about e-bike laws? Here’s what applies in Spencerport, Ogden - RochesterFirst This micro EV with 55 miles of range is a tiny electric vehicle for the city Tennessee passes bill targeting e-bikes and more letters to the editors - Chattanooga Times Free Press Haymarket Moves Toward Park Closing Hours, E-Bike Rules to Enhance Safety - Potomac Local News E-bike issues could mean Brentwood law changes - wkrn.com Stoneham police hold E-bike safety meeting to raise awareness - Yahoo Child sustains minor injuries after illegally riding e-bike and colliding with car - WGAL Huntsville police testing e-bikes for patrols - WAAY 31 News Electric bike rider dies in traffic crash in Greensboro - greensboro.com Rad Power Bikes files for bankruptcy and is looking to sell the business Montgomery Police Remind Residents New E-Bike Regulations Now Require A License and Insurance - The Montgomery News Cool new device does for electrified walking what e-bikes did for cycling CoMotion LA Micromobility event vehicle roundup: fun ways to get around the city Madrid bans e-scooters on public transport Brentwood commissioners evaluating electric bike safety - Yahoo E-scooter company Bird files for bankruptcy Woman on e-bike killed in collision with pickup truck in Greensboro, officers say - WXII From dating apps for charging stations to diesel scents for e-trucks – the industry’s April Fools’ jokes Rivian spins out a new micromobility startup called Also with $105M from Eclipse Stoneham police hold E-bike safety meeting to raise awareness - boston25news.com NJ Enacts Sweeping E-Bike Safety Law Amid Rising Accident Concerns - TAPinto Charlottesville to award another 36 e-bike vouchers - WVIR Rivian spinoff Also raises another $200M to build e-bikes and more Fast growth, few rules: Coastside struggles to regulate e-bikes - Coastside News Gain a budget-friendly means to travel for up to 40 miles with Hoverfly's Ourea e-bike down at $425 - 9to5Toys AliExpress Has a 750W Peak 36V Adult Electric Bike for Just $277 With Free Delivery - IGN As an e-biker ripped through Macomb Township, a police drone was in pursuit - The Detroit News The startups rolling out of Europe’s early-stage micromobility scene Consolidation continues in micromobility as Cooltra snaps up Cityscoot Child injured in e-bike crash in Upper Allen Township: police - local21news.com Confused about e-bike laws? Here’s what applies in Spencerport, Ogden - RochesterFirst This micro EV with 55 miles of range is a tiny electric vehicle for the city Tennessee passes bill targeting e-bikes and more letters to the editors - Chattanooga Times Free Press Haymarket Moves Toward Park Closing Hours, E-Bike Rules to Enhance Safety - Potomac Local News E-bike issues could mean Brentwood law changes - wkrn.com Stoneham police hold E-bike safety meeting to raise awareness - Yahoo Child sustains minor injuries after illegally riding e-bike and colliding with car - WGAL Huntsville police testing e-bikes for patrols - WAAY 31 News Electric bike rider dies in traffic crash in Greensboro - greensboro.com Rad Power Bikes files for bankruptcy and is looking to sell the business Montgomery Police Remind Residents New E-Bike Regulations Now Require A License and Insurance - The Montgomery News Cool new device does for electrified walking what e-bikes did for cycling


Battery Parallel/Series Safety Checker

🔋 Battery Parallel/Series Safety Checker — Visualize & Verify Your Battery Pack Safely

The Battery Parallel/Series Safety Checker is an interactive simulator for DIY battery builders, e-bike enthusiasts, and electronics hobbyists.
Easily calculate voltage, capacity, and energy for series/parallel configurations, while checking for safe and practical limits.


🛠 How to Use the Simulator

  1. Choose Your Cell Type – Supports 18650, 20700, 21700 cells:

    • 18650: 3.7V, 3Ah
    • 20700: 3.7V, 4Ah
    • 21700: 3.7V, 5Ah
  2. Set Series and Parallel Counts:

    • Series (S) – cells connected end-to-end, increases voltage.
    • Parallel (P) – cells connected side-by-side, increases capacity (Ah).
  3. View Calculated Results – Displays voltage (V), capacity (Ah), and total energy (Wh = V × Ah) instantly.
  4. Visual Representation – Grid shows series/parallel layout. Hover cells to see individual voltage and capacity.

💡 Why Use This Tool

  • Quick Planning: Calculate pack specifications instantly without manual math.
  • Safe Configurations: Warnings for unsafe series, parallel, or total cell counts.
  • Visual Learning: Understand complex battery layouts at a glance.
  • Energy Estimation: See how different configurations affect total energy storage (Wh).

Whether you’re designing an e-bike battery, electronics project, or learning about battery packs,
this simulator simplifies planning and prevents costly mistakes.




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