Battery for HP TPN-Q278 HSTNN-OB1R L84394-005 SD03XL 11.55V 41.7Wh 3670mAh Compatible with HP Pavilion 15-cs2000, 15-da2000 Series 12-Month Warranty

**Important
Voltage Warning: **
Please verify your original battery voltage. This replacement battery is 11.55V. If your original battery is 11.25V, 11.4V, or 11.55V, it is fully compatible. Do NOT use if your original battery is 14.4V or 15.2V, as this may cause damage.

**Compatible Models & Part Numbers: **
- HP Pavilion 15-cs2000 series (15-cs2010nr, 15-cs2030nr, 15-cs2070nr, 15-cs2080nr, etc. )
- HP Pavilion 15-da2000 series (15-da2010nr, 15-da2030nr, 15-da2070nr, etc. )
- HP Pavilion 15-cs3000 series (15-cs3010nr, 15-cs3030nr, etc. )
- Replacement for: HSTNN-OB1R, L84394-005, SD03XL, L84394-001, HSTNN-LB1R, HSTNN-DB1R, 920070-421, 920070-422, 920070-423, 920070-424, 920070-425, 920070-426, 920070-427, 920070-428, 920070-429, 920070-430

**Specifications: **
- Battery Type: Li-ion
- Voltage: 11.55V
- Capacity: 41.7W h / 3670mAh
- Cell Count: 3 cells
- Color: Black
- Weight: Approx. 230g
- Dimensions: 270 x 50 x 20 mm (approx. )

**Comparison Table: **
| Feature | Our Battery | Generic Battery |
|---------|-------------|----------------|
| Voltage | 11.55V (exact match) | 11.25V or 11.4V (may cause error) |
| Capacity | 41.7W h (original spec) | 37Wh or lower (shorter runtime) |
| Protection | Overcharge/over-discharge/short-circuit | Basic or none |
| Warranty | 12 months | 6 months or less |
| Compatibility | Verified for TPN-Q278, HSTNN-OB1R, etc. | May not fit or trigger error code |

**Installation Tips: **

1. Power off your laptop and unplug the AC adapter.

2. Remove the bottom panel screws (refer to your laptop manual).

3. Disconnect the old battery cable and remove the battery.

4. Insert the new battery, connect the cable, and secure the panel.

5. Charge the battery fully before first use (approx. 3-4 hours).

6. If you see a battery not detected message, check the cable connection or restart the laptop.

**Note: **
This battery is a high-quality aftermarket replacement, not an original HP product. It is 100% compatible and tested to meet or exceed OEM specifications. If your laptop model is not listed, please contact us before purchasing to confirm compatibility.