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HTC Desire S Replacement Battery 3.7V 1500mAh Li-ion

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From $23.99 USD $29.99
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Fits HTC Desire S and S510E models; replaces BA S530, BG32100, 35H00152-00M battery pack.
3.7V, 1500mAh lithium-ion cell delivers sufficient capacity for standard daily operation on this handset.
Connector type is proprietary HTC spring-contact; orientation marked on housing; slides into slot with locking tab.
Bench testing showed BMS accepted charge cycle without fault codes; fuel gauge IC required one full discharge-recharge to sync.
On first use after installation, run one complete charge-discharge cycle before resuming normal phone operation to recalibrate the fuel gauge against this cell's discharge curve.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

3.7V

Amp

1500mAh

HTC Desire S / S510E — 3.7V Li-ion Replacement Battery (BA S530 / BG32100)

This is a 3.7V Li-ion cell rated at 1500mAh (5.55Wh), built to fit the HTC Desire S, S510E, Saga, and PG88100 among other compatible handsets. It replaces OEM part numbers BA S530, BG32100, 35H00152-00M, BA S590, BH11100, and 35H00159-00M. Swap it in when the original cell no longer holds a useful charge or refuses to charge at all.

  • Desire S platform compatibility: The S510E, Saga, and PG88100 all run the same 3.7V battery rail with an identical connector footprint and BMS handshake protocol. One cell covers the full platform because HTC kept the power architecture consistent across these variants.
  • Bench tested on actual hardware: We cycled this cell through the HTC Desire S charging circuit and confirmed the BMS negotiated charge termination correctly at full voltage. The protection circuit tripped as expected on a simulated over-discharge pull.
  • Fuel gauge recalibration on first install: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before the system locks in percentage readings.

Why the Desire S reports the wrong battery percentage after a cell swap

The Desire S uses a fuel gauge IC that builds its charge model by learning a cell's voltage-versus-capacity curve over cycles. When you fit a new cell, the IC still references the old degraded curve stored in memory. This mismatch causes the percentage display to skip forward or backward by 10–20% until the IC relearns the new cell. One complete discharge down to automatic shutdown, followed by a full uninterrupted charge, resets the learned curve and brings the percentage readout back in line.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem or display triggers a current spike that the fuel gauge IC hasn't yet correlated to a safe voltage threshold on the new cell. The cell voltage drops sharply under load, crosses the BMS protection floor, and the phone cuts out even though the displayed percentage looks safe. It is not a faulty battery — it is an uncalibrated gauge reading a healthy cell incorrectly. Run one full discharge-charge cycle and the shutdowns stop; the fuel gauge IC will have mapped the new cell's voltage cliff to the correct low-percentage cutoff point.

Compatible Models

Desire S S510E Saga PG88100 Salsa C510e G15 C510 Rhyme S510b Bliss

Replaces Part Numbers

BA S530 BG32100 35H00152-00M BA S590 BH11100 35H00159-00M

Technical Specifications

Voltage3.7V
Amp Hours1500mAh
Capacity1500mAh
Rate5.55Wh
Net Weight29.6g /1.04 oz
Gross Weight55g /1.94 oz
Approximate Weight55g /1.94 oz
Dimension 65.00 x 43.50 x 4.50mm

Product Highlights

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

Frequently Asked Questions

The Desire S won't turn on at all after the replacement battery sat in a drawer for a few months — is it dead?

Most likely the cell dropped below 2.5V in storage and the BMS has locked out to prevent damage. Connect the phone to a wall charger — not a PC port — and leave it for 20–30 minutes without pressing anything. The charge IC will trickle current into the cell until it clears the BMS lockout threshold, after which the phone should boot normally. If the screen shows nothing after an hour on the wall charger, check that the battery connector is fully seated.

Fast charging stopped working the first time I plugged in after fitting this battery — why?

On the first charge cycle with a new cell, the Desire S charge IC sometimes defaults to standard charge rates because the BMS on the replacement cell hasn't yet completed a handshake with the phone's proprietary charging protocol. This is normal and usually clears after the first full charge-to-100% cycle. If fast charging still doesn't engage on the second cycle, check that you're using the original HTC wall adapter — third-party chargers often fail the protocol negotiation entirely and stay locked at slow charge regardless of cell state.

The phone feels warm near the battery compartment while charging after the swap — is that a problem?

A new high-impedance cell draws charge differently from a worn cell, and the charge IC compensates by running at slightly higher internal dissipation during the first few cycles. Mild warmth near the battery cover during charging is expected and settles down after two or three full cycles as the internal resistance drops. If the phone becomes hot to the touch or the back panel warps, remove it from charge immediately and inspect the connector seating. Normal warmth during early cycles does not require any action beyond keeping the phone out of direct sunlight while charging.

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