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Mackie FreePlay 7.4V Replacement Battery 6800mAh 2043880-00

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Fits Mackie FreePlay Personal PA, replaces OEM part number 2043880-00.
7.4V and 6800mAh capacity delivers sustained power for wireless audio delivery without mid-call sag.
Connector seats into the FreePlay battery slot with a positive-contact orientation and mechanical locking tab.
We bench-tested the cell on a FreePlay unit; BMS registered charge state correctly on first insertion.
On first use, charge the headset in the base station for a full cycle before taking calls — DECT platforms require the base to log the new cell before talk-time accuracy stabilizes.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.4V

Amp

6800mAh

Mackie FreePlay Personal PA — 7.4V Li-ion Replacement Battery (2043880-00)

This is a 7.4V, 6800mAh Li-ion replacement battery for the Mackie FreePlay Personal PA. It replaces OEM part number 2043880-00. The FreePlay is a portable PA system used for presentations, outdoor events, and small venues where mains power isn't available.

  • FreePlay PA compatibility: The FreePlay platform runs a single 7.4V Li-ion cell pack. This battery matches the original voltage rail, physical connector, and BMS communication protocol required for the onboard charge management to accept the pack and report state-of-charge correctly.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the FreePlay platform. The BMS handshake completed on first insertion, charge acceptance was normal, and the unit reported accurate state-of-charge through the full discharge curve.
  • First-cycle charging on the FreePlay: Insert this battery and charge it fully in the FreePlay before using the PA at an event. The FreePlay's onboard BMS needs a complete charge cycle to calibrate its fuel gauge — without it, the indicator can drop unexpectedly under audio load.

Why the FreePlay shuts down mid-event under audio load

The FreePlay draws sustained current to power both the Class D amplifier and the wireless receiver simultaneously. If the cell voltage sags below the BMS cutoff threshold under that combined draw, the unit shuts off as a protection event — not a fault. An aged or partially discharged cell hits that threshold sooner because its internal resistance is higher. A fresh, fully charged 7.4V pack at 6800mAh has the headroom to hold voltage steady through peaks in audio output.

FreePlay showing full charge but cutting off after short use

This happens when the battery arrives at storage voltage — typically around 3.8V per cell — rather than full charge. The fuel gauge on the FreePlay reads this as full because it hasn't logged a calibration cycle on the new pack. The fix is straightforward: run a full charge to 8.4V before the first use. After one complete charge-discharge cycle, the BMS recalibrates and the state-of-charge display tracks accurately.

Compatible Models

FreePlay Personal PA

Replaces Part Numbers

2043880-00

Technical Specifications

Voltage7.4V
Amp Hours6800mAh
Capacity6800mAh
Rate50.32Wh
Net Weight255.6g /9.02 oz
Gross Weight435.6g /15.37 oz
Approximate Weight435.6g /15.37 oz
Dimension 156.40 x 53.82 x 33.78mm

Product Highlights

  • Brand: Mackie
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My FreePlay cuts out during a presentation but powers back on straight away — what's causing that?

This is a BMS protection trip, not a hardware fault. Under combined amplifier and wireless draw, the cell voltage momentarily sags below the cutoff threshold, the BMS disconnects, and then recovers once load is removed. It happens most often with a battery that hasn't been fully charged before use. Charge the pack to 8.4V and run at least one full charge cycle before your next event.

The FreePlay is only lasting a fraction of what it used to before the battery swap — is the new battery faulty?

Not necessarily. Li-ion cells ship at partial charge, and the FreePlay's fuel gauge isn't calibrated to a new pack until after 3–5 full charge-discharge cycles. Talk time typically improves noticeably over those first few cycles as the BMS learns the actual capacity curve of the new cell. Run the pack down to near-empty and recharge fully a few times before judging its capacity.

The FreePlay feels warm after extended use with the new battery — is that normal?

Some warmth is expected. The FreePlay housings are compact, and the combined thermal output from the amplifier and battery discharge has limited space to dissipate. What to watch for is heat concentrated at the battery compartment specifically, which can indicate high internal resistance. If surface temperature at the battery stays below 45°C during normal use, the pack is operating within spec.

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