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BOSS 18F Cap Capacitor for car audio energy storage

BOSS Audio Systems ★ 3.8/5 · ItemOracle Score Mid-Range

$105 USD
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BOSS Audio Systems Cap18 - 18 Farad Car Capacitor For Energy Storage To Enhance Bass Demand From Audio System, Audible Warning Tone For Reverse Polarity, Voltage Overload Low Battery Voltage Led

Energy storage capacitor for car amplifiers with LED voltage readout and reverse polarity warning. Helps stabilize power to improve audio performance; some users note improved lighting and installation ease, while others report limited dimming reduction and durability concerns

Highlights

  • voltage monitoring with decimal readout
  • reverse polarity audible alert
  • constant power to amplifier

Pros

  • blue LED voltage display
  • sturdy bolt-down terminals
  • helps stabilize power to amplifier
  • easy to mount and lightweight
  • audible warning for reverse polarity

Cons

  • mixed performance on light dimming
  • some reports of durability issues

Best For

  • car audio systems needing stable power
  • systems with bass-heavy output
  • vehicles with battery voltage fluctuations
  • installations requiring bolt-down terminals
  • audio setups needing visual voltage readout
  • retrofit for added energy storage

Features

  • Audible warning tone for reverse polarity and voltage issues to keep power stable
  • Voltage measurement with automatic sleep when low variation; accurate to ±0.1 V
  • Blue LED voltage meter displays precise voltage with secure bolt-down terminals
  • 18 Farad capacitance with low ESR (<0.004) and rated 12 VDC
  • Providing constant energy to the amplifier for improved system performance

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