JBL Flip 5 Eco Replacement Battery 3.7V 5200mAh Li-ion
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JBL Flip 5 Eco Replacement Battery 3.7V 5200mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ 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.
JBL Flip 5 Eco Replacement Battery 3.7V 5200mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
5200mAh
JBL Flip 5 Eco / Flip 5 Ocean — 3.7V Li-ion Replacement Battery (SUN-INTE-152)
This 3.7V, 5200mAh Li-ion cell replaces the original battery in the JBL Flip 5 Eco and Flip 5 Ocean portable Bluetooth speakers. Both models use the same cell format, connector pinout, and BMS handshake. Swap it in when the original cell no longer holds a usable charge.
- Flip 5 Eco and Flip 5 Ocean compatibility: Both variants share the same PCB layout, battery bay dimensions, and charge management IC. The cell measures 71.60 × 38.45 × 20.00mm and connects via the same two-pin harness, so one part number covers both.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Flip 5 platform. The BMS accepted the pack without fault flags, balanced correctly through USB-C PD input, and held stable voltage through high-volume amplifier draw.
- Flip 5 fuel gauge calibration: Let the speaker discharge below 20% at least once a month before recharging. Constant top-off charging — plugging in at 60% or higher every time — causes the onboard fuel gauge to drift. Once the gauge drifts, the speaker shuts off at an indicated 20–30% with charge still in the cell.
Audio distorting before the battery indicator reaches empty
The Flip 5 amplifier draws a sharp current spike at high volume. When the cell ages or a new cell is poorly conditioned, internal resistance rises and pack voltage sags under that spike. The amplifier hits its minimum supply voltage and clips the audio signal before the fuel gauge shows low. On a fresh, conditioned cell, pack voltage should hold above 3.5V under full amplifier load — if it's dropping below that, check the cell's internal resistance or re-condition through a full discharge cycle first.
Speaker won't wake from USB-C when battery is deeply discharged
If the Flip 5 has sat unused for several months, the cell can drop below the minimum voltage threshold the USB-C PD controller will accept — typically around 2.5V. At that point, the charger sees the pack as a fault condition and won't initiate a charge session. Connect the speaker to a 5V USB-A source instead of USB-C PD; the lower-current trickle from a basic 5V port can recover the cell slowly without triggering the PD fault cutoff. Once the cell climbs above 3.0V, standard USB-C charging resumes normally.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: JBL
- Manufacturer: CS
- Series: Standard
- Color: Blue
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Flip 5 Eco shows a full charge but the audio cuts out after about an hour of play — is that a battery problem?
Yes, and the cause is fuel gauge drift, not a sudden cell failure. When the speaker is repeatedly charged from 50–60% without a full discharge cycle, the onboard gauge loses track of true capacity and reports 100% on a cell that's actually holding much less. Run the speaker all the way down until it powers off on its own, then charge it fully in one session — this resets the gauge reference points and gives you an accurate state-of-charge reading again.
The Flip 5 Ocean's Bluetooth drops out specifically at high volume — it reconnects fine at lower levels. What's causing that?
At high volume, the amplifier and the Bluetooth radio are both pulling current simultaneously. If the cell's internal resistance is elevated — common in aged or deeply cycled packs — the combined draw causes a brief voltage sag. That sag drops the radio module below its stable operating voltage and the Bluetooth link drops. The fix is a cell replacement; once the new pack is in, verify the issue is gone by holding the speaker at maximum volume for 30 seconds — a healthy cell should keep voltage above 3.5V through that load.
I plugged in my Flip 5 Eco after it sat in a bag for four months and nothing happens — no charge indicator, no power. What do I do?
A cell that's sat discharged for months can fall below 2.5V, which is the floor the USB-C PD controller accepts before it flags the pack as a fault and refuses to charge. Plug into a basic 5V USB-A wall adapter or phone charger instead — the unregulated 5V trickle bypasses the PD negotiation and feeds a slow recovery current into the cell. Leave it connected for 20–30 minutes; once the cell recovers above 3.0V, switch back to the standard USB-C cable and charging will proceed normally.
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