The EVE 1454 3.7V and EB-BR170ABU case batteries are compatible replacements for Samsung Galaxy Buds+ earphones. These lithium-ion batteries restore playtime to 11 hours (earbuds) and 22 hours (case). Replacement involves disassembling the earbuds, swapping cells, and ensuring proper soldering. Use OEM-spec batteries to avoid damage.
What Makes the EVE 1454 Battery Compatible with Galaxy Buds+?
The EVE 1454 matches Samsung’s original 3.7V 85mAh specifications, maintaining voltage stability critical for Buds+’ dual-driver audio system. Its 5.6mm thickness fits precisely in the earbud housing. Third-party alternatives exceeding 4.35V charging voltage risk overloading the Buds+’ protection circuit module (PCM).
How to Safely Replace Galaxy Buds+ Batteries Without Damage?
Disassemble earbuds using a heat gun at 80°C to soften adhesive. Lift the motherboard with a 0.1mm pry tool, avoiding ribbon cable tears. Desolder old batteries using flux and 320°C soldering iron. Install EVE 1454 cells with spot welder, maintaining 7.5mm terminal spacing. Reassemble with B-7000 adhesive.
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When handling the battery terminals, always use non-conductive tools to prevent accidental short circuits. The charging contacts require precise alignment – a 0.5mm misalignment can reduce charging efficiency by 40%. After installation, perform a slow charge cycle (0.5C rate) to condition the new battery. Test the earbuds’ current draw using a milliammeter; normal operation should show 12-15mA during playback at 50% volume.
| Tool | Purpose | Safety Tip |
|---|---|---|
| ESD-Safe Soldering Iron | Terminal connection | Use lead-free solder |
| Kapton Tape | Insulation | 3-layer wrapping minimum |
| Digital Calipers | Measure battery thickness | Verify ≤5.6mm |
Why Does Battery Capacity Differ Between Earbuds and Case?
The EB-BR170ABU case battery uses a 472mAh cell vs. earbuds’ 85mAh due to charging demands. It employs a 2-stage charging curve: 1A fast charge below 70% capacity, tapering to 200mA trickle charge. This prevents thermal buildup while maintaining 3.85V output stability during simultaneous earbud charging.
What Are Hidden Risks of Third-Party Galaxy Buds+ Batteries?
Non-OEM cells often lack UL2054 certification, risking thermal runaway above 60°C. Counterfeit batteries may use cobalt oxide cathodes instead of EVE’s nickel-manganese-cobalt (NMC) blend, reducing cycle life from 500 to 200 charges. Some lack PCMs with overcurrent protection below 1.5A.
Substandard separators in cheap batteries can lead to dendrite formation – microscopic lithium spikes that pierce internal layers. This typically manifests as sudden voltage drops during use. Always verify the manufacturer’s ISO 9001 certification and request batch test reports. Authentic EVE batteries feature laser-etched QR codes with 16-digit traceable serial numbers.
“Modern TWS batteries like the EVE 1454 use adaptive charge algorithms that sync with the host device’s firmware. Improper replacements can disrupt communication between the BMS and Buds+’ SoC, causing false ‘battery critical’ warnings. Always verify SMBus compatibility when sourcing replacement cells.”
– Senior Engineer, Wearable Power Systems
FAQs
- Can I Use iPhone AirPod Batteries in Galaxy Buds+?
- No. AirPods use 3.82V cells incompatible with Samsung’s 3.7V architecture. Voltage mismatches can trigger permanent PCM lockout.
- How Many Charge Cycles Do EVE 1454 Batteries Support?
- EVE rates these cells for 500 cycles to 80% capacity when charged below 1C rate. Fast charging at 2C reduces lifespan to 300 cycles.
- Why Does My Replacement Battery Show 103% Charge?
- This indicates improper PCM calibration. Reset battery gauge by draining to 0%, then charging uninterrupted for 4 hours. Repeat 3 times.