PowerTap

$249.99

PowerTap Wireless Voltmeter

The PowerTap Wireless Voltmeter is built for fast, live battery monitoring in serious bass-head builds. It delivers real-time, cell-level voltage data so you can keep a constant eye on pack health during charging, discharging, and heavy load.

Designed for reliability and simplicity, PowerTap gives you the information you actually need—when you need it.

Key Features

  • Dual battery pack support
    Monitor two separate battery banks, each up to 6 lithium cells (6S)

  • Wireless real-time monitoring
    ESP-NOW based communication for fast, low-latency updates

  • Per-cell voltage tracking
    See individual cell voltages to catch imbalance early

  • Dual temperature sensing per node
    Monitor battery + amplifier temps to detect hot spots instantly

  • Live load response
    Watch voltage sag in real time during heavy bass hits

  • Compact, modular system
    Easy to install across builds of any size

What’s Included (Kit – $199.99)

  • 2x Nodes (one per battery bank)

  • 1x Hub (main logic + display)

  • 1x Dash Display (clean, user-facing screen)

Typical Use Cases

  • Prevent over-discharge by tracking individual cell voltages

  • Monitor voltage sag under load during bass-heavy playback

  • Detect weak or failing cells before they cause failure

  • Track heat buildup in battery banks and amplifiers

  • Verify battery balancing performance

Installation Tips

  • Mount voltage sense leads securely to each cell tap (C1–C6 + GND)

  • Place temp sensors directly on:

    • Cell casing

    • Bus bars

    • Near amplifier heat sources

  • Keep antennas away from:

    • Thick metal panels

    • Power wiring bundles
      (for best signal strength)

Monitoring Best Practices

  • Watch for voltage drop differences between cells
    (>0.2V difference can indicate imbalance)

  • Pay attention to sudden voltage sag under load
    → Possible high internal resistance or weak cell

  • Track temperature trends, not just spikes
    → Slow heat buildup can be just as dangerous

Safety Notes

  • PowerTap is a monitoring tool, not a replacement for a BMS

  • Always use proper fusing and protection circuits

  • Avoid exposure to moisture, vibration, and extreme heat

  • If you see:

    • Rapid voltage drop

    • Sharp temp rise
      → Disconnect immediately and inspect

Why PowerTap

Because guessing kills batteries—and builds.

PowerTap gives you clear, real-time insight so you can push your system hard without flying blind.

PowerTap Wireless Voltmeter

The PowerTap Wireless Voltmeter is built for fast, live battery monitoring in serious bass-head builds. It delivers real-time, cell-level voltage data so you can keep a constant eye on pack health during charging, discharging, and heavy load.

Designed for reliability and simplicity, PowerTap gives you the information you actually need—when you need it.

Key Features

  • Dual battery pack support
    Monitor two separate battery banks, each up to 6 lithium cells (6S)

  • Wireless real-time monitoring
    ESP-NOW based communication for fast, low-latency updates

  • Per-cell voltage tracking
    See individual cell voltages to catch imbalance early

  • Dual temperature sensing per node
    Monitor battery + amplifier temps to detect hot spots instantly

  • Live load response
    Watch voltage sag in real time during heavy bass hits

  • Compact, modular system
    Easy to install across builds of any size

What’s Included (Kit – $199.99)

  • 2x Nodes (one per battery bank)

  • 1x Hub (main logic + display)

  • 1x Dash Display (clean, user-facing screen)

Typical Use Cases

  • Prevent over-discharge by tracking individual cell voltages

  • Monitor voltage sag under load during bass-heavy playback

  • Detect weak or failing cells before they cause failure

  • Track heat buildup in battery banks and amplifiers

  • Verify battery balancing performance

Installation Tips

  • Mount voltage sense leads securely to each cell tap (C1–C6 + GND)

  • Place temp sensors directly on:

    • Cell casing

    • Bus bars

    • Near amplifier heat sources

  • Keep antennas away from:

    • Thick metal panels

    • Power wiring bundles
      (for best signal strength)

Monitoring Best Practices

  • Watch for voltage drop differences between cells
    (>0.2V difference can indicate imbalance)

  • Pay attention to sudden voltage sag under load
    → Possible high internal resistance or weak cell

  • Track temperature trends, not just spikes
    → Slow heat buildup can be just as dangerous

Safety Notes

  • PowerTap is a monitoring tool, not a replacement for a BMS

  • Always use proper fusing and protection circuits

  • Avoid exposure to moisture, vibration, and extreme heat

  • If you see:

    • Rapid voltage drop

    • Sharp temp rise
      → Disconnect immediately and inspect

Why PowerTap

Because guessing kills batteries—and builds.

PowerTap gives you clear, real-time insight so you can push your system hard without flying blind.