Jabra Elite 85H Compatible Battery AK-E285 3.7V 750mAh
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Jabra Elite 85H Compatible Battery AK-E285 3.7V 750mAh - is backordered and will ship as soon as it is back in stock.
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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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Jabra Elite 85H Compatible Battery AK-E285 3.7V 750mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
750mAh
Jabra Elite 85H / Evolve2 85 — 3.7V Li-Polymer Replacement Battery (AK-E285)
This is the AK-E285 Li-Polymer cell for the Jabra Elite 85H and Evolve2 85 wireless headphones. It runs at 3.7V with a 750mAh (2.78Wh) capacity. Fit this battery when the original cell no longer holds a charge or talk time has noticeably dropped.
- Elite 85H and Evolve2 85 compatibility: Both models share the same 3.7V battery rail, connector pinout, and BMS handshake protocol — one cell covers both headsets. The AK-E285 part number is common to the entire platform.
- Bench tested on actual hardware: We cycled this cell through charge, idle, and active ANC-plus-Bluetooth draw states. The BMS negotiated correctly with the host headset on each run and held voltage within spec under combined load.
- First-cycle base station protocol: Seat the headset in the base station and complete one full charge cycle before taking a call. The base station needs that full cycle to log the new cell — until it does, the talk-time indicator will read inaccurately.
Why the Elite 85H cuts out mid-call on a new battery
The Elite 85H draws simultaneously from the audio processor, ANC circuit, and Bluetooth radio during a call. That combined load creates brief current spikes that a cell at storage voltage cannot sustain cleanly. When cell voltage dips below the BMS protection threshold — even momentarily — the headset drops the connection. Completing a full charge cycle in the base before the first call eliminates this drop-out pattern by bringing the cell to its rated voltage plateau.
Base station shows full charge but headset shuts off after short use
A new Li-Polymer cell ships at storage voltage, typically around 3.6–3.7V, not at peak charge. The base station's charge indicator reads a completed charge state before the cell has actually been brought to 4.2V through a proper CC/CV cycle. The headset then pulls from a cell that looks full but carries less usable energy than expected. Run one complete uninterrupted charge in the base — the indicator should cycle through charging and settle at full — before relying on the headset for extended use.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Jabra
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Jabra Elite 85H keeps cutting out mid-call even though the battery shows charged — what's happening?
The Elite 85H runs the ANC circuit, audio processor, and Bluetooth radio at the same time, creating brief current spikes the cell can't sustain if it hasn't been properly conditioned. The BMS trips when voltage sags below its protection threshold, dropping the connection. This isn't a fault — it's the cell responding to combined load before it's reached its full charge plateau. Do one complete charge cycle in the base station, confirmed by the indicator settling at full, before your next call.
Talk time on the new AK-E285 cell is noticeably shorter than rated for the first few uses — is the battery faulty?
It's not faulty. A fresh Li-Polymer cell hasn't completed its formation cycles, so usable capacity starts below the rated 750mAh and builds over the first three to five full charge-discharge cycles. Each cycle allows the electrolyte to fully wet the electrode surfaces, incrementally increasing the energy the cell can deliver. Run three to five normal use-and-charge cycles through the base station and rated talk time will stabilise.
The Jabra headset feels noticeably warm on the right ear cup during long calls — is this a battery issue?
Warmth during extended calls is normal for this platform. The Elite 85H concentrates the battery, ANC processor, and Bluetooth module in a small housing on the right ear cup, and sustained combined draw generates heat in that space. A replacement cell doesn't change this — the thermal load comes from the electronics, not the battery condition. If the housing becomes uncomfortable to touch rather than just warm, check that the ANC mode isn't set to maximum in the Jabra Sound+ app, as that setting increases processor draw continuously.
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