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QL1695 Samsung Galaxy A01 Replacement Battery 3.85V 2900mAh

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From $25.99 USD $31.99
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Fits Samsung Galaxy A01 SM-A015V and replaces OEM battery part number QL1695.
Voltage is 3.85V at 2900mAh capacity—sufficient to run the A01's display and modem between daily charges.
Connector slides straight into the battery slot; no locking tab, standard Samsung flex orientation toward the motherboard.
We bench-tested against an original QL1695 pack; BMS accepted charge current within spec, fuel gauge IC initialized without lockout.
On first use after installation, disable fast charging for one complete discharge-charge cycle to let the coulomb counter recalibrate against the new cell's discharge curve before high-current charging.
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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.

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: 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

3.85V

Amp

2900mAh

Samsung Galaxy A01 SM-A015V — 3.85V Li-Polymer Replacement Battery (QL1695)

This is a 3.85V, 2900mAh (11.17Wh) Li-Polymer replacement battery for the Samsung Galaxy A01 (SM-A015V, SM-A015M/DS, and related variants). It replaces the original QL1695 cell when the factory battery can no longer hold a usable charge. Fits the slim battery bay without modification — same footprint at 71.30 x 57.55 x 4.20mm.

  • Galaxy A01 series compatibility: The SM-A015V, SM-A015M/DS, and related A01 variants share the same battery connector pinout and BMS handshake protocol, which is why a single QL1695 cell covers this entire model cluster.
  • Bench tested on actual hardware: We ran this cell in an SM-A015V and confirmed the BMS accepted the new cell without triggering a fault flag — charge current stepped up normally through trickle, CC, and CV phases.
  • Fuel gauge recalibration after swap: On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before fast-charge current is introduced into an uncalibrated cell.

Sudden shutdown at 20–30% on the Galaxy A01 after a cell swap

The Galaxy A01's fuel gauge IC stores the discharge curve of the original cell in its coulomb counter. When a new cell goes in, the counter is still calibrated to the old, degraded cell's curve — so it misreads remaining capacity. Under screen or modem load, the new cell's voltage drops faster than the IC expects, and the phone hits the low-voltage cutoff while the gauge still shows 20–30%. One full discharge cycle, draining to automatic shutdown and charging back to 100%, forces the IC to relearn the new curve. After that cycle, percentage readings stabilise.

USB fast charge not activating on the first cycle after replacement

The charge IC on the A01 runs a handshake with the BMS before stepping up to fast-charge current. On the very first charge cycle with a new cell, the BMS often returns a conservative response — the IC stays in standard 5V charging mode as a precaution. This is not a fault. Let the first cycle complete at standard rate, disconnect, then reconnect — the BMS handshake resolves on the second connection and fast charge activates normally. If it still does not step up, confirm the charger outputs at least 9V/1.67A and the cable supports USB-PD signalling.

Compatible Models

SM-A015V Galaxy A01 2019 SM-A015M/DS SM-A015 SM-A015M SM-A015G/DS SM-A015F/DS Galaxy A01 Galaxy A01 Core SM-A013G/DS SM-A013F/DS SM-A015F SM-A013M/DS SM-A015T SM-A015A SM-A105T1

Replaces Part Numbers

QL1695

Technical Specifications

Voltage3.85V
Amp Hours2900mAh
Capacity2900mAh
Rate11.17Wh
Net Weight41g /1.45 oz
Gross Weight91g /3.21 oz
Approximate Weight91g /3.21 oz
Dimension 71.30 x 57.55 x 4.20mm

Product Highlights

  • Brand: Samsung
  • 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 Galaxy A01 won't turn on at all after sitting in a drawer for a few months — new battery installed but still dead. What's happening?

A Li-Polymer cell discharged below roughly 2.5V trips the BMS into lockout mode — the pack refuses to output current to protect the cell from damage. Plug in the original Samsung charger and leave it connected for 20–30 minutes without pressing the power button; the charge IC delivers a trickle current that brings the cell voltage back above the BMS unlock threshold. Once the screen shows the charging indicator, the BMS has cleared the lockout and the phone will boot normally.

The battery percentage on my A01 jumps around erratically — goes from 60% straight to 35% with no warning. Is the new battery faulty?

The fuel gauge IC is still running against the discharge profile it built for the old cell. When the new cell's voltage response doesn't match that stored curve, the coulomb counter corrects itself in sudden jumps rather than smoothly. Run two full discharge-to-shutdown and charge-to-100% cycles without interruption. After the second cycle the IC has enough data points to build an accurate curve for the new cell and the percentage readings settle.

The phone gets noticeably warm near the back around the battery area during the first few charges after swapping the cell — is that normal?

A fresh Li-Polymer cell has higher internal impedance than a broken-in cell, so the charge IC dissipates more energy as heat during the constant-current phase. This is most pronounced on the first two or three charge cycles and reduces as the cell's impedance settles. Keep the phone out of a case for the first couple of charges to let heat dissipate freely. If the back is too hot to hold comfortably — above roughly 45°C — disconnect and let it cool before resuming; that indicates the charge IC is not stepping down current correctly.

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