The problem: a laptop that looked fine but was not
Short answer: Unscrupulous grey-market refurbishers in India's second-hand laptop market routinely swap original parts — especially batteries and SSDs — with cheaper or degraded substitutes before resale, without disclosure. The laptop appears to work normally on first use. The failures emerge within weeks. Battery swelling, SSD failures, and overheating from mismatched thermal solutions are the three most common outcomes we see from grey-market refurb units arriving at the bench.
Three bench cases from grey-market purchases
Case 1: The "512 GB" SSD that was actually 128 GB
A Dell Inspiron purchased from a local second-hand dealer in Bengaluru was advertised as having a 512 GB NVMe SSD. The buyer noticed the laptop became very slow and files started failing to save about six weeks after purchase. When it arrived at our bench, the SSD reported as 512 GB in Windows Explorer — but the physical controller chip on the M.2 drive board was a 128 GB unit with firmware-modified capacity labels. A fake SSD with a false capacity label works normally until you write past its actual capacity, at which point it begins silently corrupting files. The customer had filled the drive to around 140 GB without realising the crisis accumulating behind it. Replacement with a genuine 512 GB drive: ₹3,200. Data recovery from the corrupted fake drive: ₹3,500.
Case 2: The swollen replacement battery
A Lenovo IdeaPad G50 was purchased at an electronics market for ₹14,000 — described as refurbished with "new battery." Within three months, the palmrest was visibly bowed upward. When we opened it, the battery was a third-party cell pack with a mismatched chemistry: nominally 4,000 mAh but actual tested capacity of under 1,200 mAh, and already showing early swelling (an expansion of the lithium-ion cells due to gas produced by cell degradation). The original OEM battery for this model is available for ₹1,800. The refurbisher had fitted a sub-₹400 replacement and sold the machine at near-original price. A swollen battery is a fire risk — this was caught before it caused structural damage. See the guide on fake battery damage patterns for the full range of cases.
Case 3: The wrong-wattage thermal solution
A Dell Latitude 5520 (Intel 11th-generation business laptop) arrived with severe overheating. On the bench, the heatsink assembly — the copper pipe and aluminium fin structure that cools the CPU and GPU — was from a lower-specification Latitude variant, designed for a 15W processor rather than the 45W processor in this unit. The grey-market refurbisher had clearly swapped a broken original heatsink for a cheaper one that physically fit but was entirely inadequate for the thermal load. The machine was throttling to under 30% of rated speed and shutting down under any meaningful workload. A correct heatsink assembly: ₹2,400. The original heatsink had likely been damaged by a previous drop and replaced invisibly.
How to protect yourself when buying refurbished
Run these checks the day you receive any second-hand laptop — before the return window closes. Download HWiNFO (free) and run a full sensor report: check battery health percentage, SSD model number against the listed spec, and RAM type and frequency. Cross-check the chassis serial number against the BIOS serial (Settings → About in Windows or press F2/Del at boot). If they do not match, the machine has been opened and parts may have been swapped. Read our full guide on buying refurbished laptops in India for the complete checklist.
When to call a repair service and what it costs
Signs of grey-market part substitution
Battery running flat in under 2 hours from new, swelling visible within weeks of purchase, SSD failures or very slow write speeds, laptop running hot under light loads, or Windows reporting a battery capacity that seems implausible for a "refurbished" machine.
Typical replacement costs in India
Genuine battery replacement: ₹1,500–₹4,500 by brand and model. Genuine NVMe SSD replacement (512 GB): ₹2,800–₹4,500. Heatsink replacement: ₹1,200–₹3,500. Diagnosis visit to check all components: ₹149.
A note from the LRW Engineer Team
We see grey-market substitution cases every week. The pattern is consistent: a machine sold at a plausible price, with a plausible story, containing one or more parts that cost the refurbisher hundreds of rupees and will fail the buyer in weeks. The solution is always the same: diagnostics on day one, within the return window. Five minutes with HWiNFO is the entire defense against months of frustration.