Compatible HS04 & HS03 Replacement Battery (HP 240 G4 / 250 G4 / 15-ac / 15-ay)
A direct guide to identifying, testing, and replacing dead or bloated 4-cell external batteries with verified 14.8V replacement packs at our Sector-19 workbench.
Why Generic Batteries Die Early (And What We Inspect First)
When your laptop shuts down the second you pull out the charger, or displays “Plugged in, not charging”, the internal lithium cell groups have fallen below their critical voltage threshold.
Before replacing a battery, our lab checks whether the fault is actually inside the battery pack or on the laptop motherboard’s charging rail. In many HP 14-ac and 15-ay boards, a failing charging IC or leaking ceramic capacitor will mimic a dead battery. At Techfix Enterprise, every device undergoes a quick voltage & charging circuit verification before a replacement battery is fitted.
Hardware Specifications & Electrical Tolerance
| Engineering Metric | Specification |
|---|---|
| Battery Model Equivalent | HS03 / HS04 (Direct Physical & Rail Match) |
| Cell Topology | 4-Cell High-Density Lithium-Ion |
| Nominal Voltage | 14.8V (Safely backwards compatible with 14.4V rails) |
| Energy Capacity | 2200 mAh (~33Wh to 41Wh class) |
| Typical Runtime | Approx. 2.0 to 2.5 hours on balanced office workloads |
| Circuit Protection | Integrated BMS: Overcharge, Over-discharge, Thermal Cut-off |
| Warranty Support | Over-the-counter testing warranty at Sector-19, Rourkela |
Type your laptop model or old battery part code below to instantly verify if this battery fits:
Why Fit Your Replacement Battery at Techfix?
⚡ Live Load Test
We seat the pack, test the chassis latches, and verify that the laptop boots and begins taking charge right in front of you.
🔍 Board Rail Verification
We ensure your laptop’s charging MOSFETs aren’t sending incorrect voltage spikes into your new battery pack.
🛡️ Counter Warranty
No waiting weeks for courier returns or shipping claims. In the unlikely event of an early cell fault, we resolve it locally at our counter.