JA Solar DeepBlue 4.0 585W (JAM72D40 class)

Rs 23,800 verified 25 Jul 2026 — prices in Pakistan move weekly

JA Solar DeepBlue 4.0 585W class (JAM72D40) — verified spec card
Image: SolarNevs (generated) · CC0-1.0 (own work) · source

Specifications

wattageVariantsJAM72D40 LB/MB family spans 580-605W; the Pakistan street '585W class' is typically 580, 585 or 590W stock
cellTechn-type TOPCon (Bycium+ cell), 72-cell 182mm, bifacial double-glass
efficiency22.4-22.5%
tempCoefficient-0.29 to -0.30 %/C (JA global datasheet vs PK retail listings)
degradation1% first year, 0.4%/year after (retail-listed, single-source)
dimensions2278 x 1134 x 30 mm, 28.3 kg (580W variant, single-source)
Warranty12-year product / 25-year performance (84.8% output floor at year 25) on documented stock; JA's global sheet lists 30-year power warranty on newer 4.0 Pro variants. Non-documents stock: no warranty.

The DeepBlue 4.0 585W class is JA Solar's mainstream n-type TOPCon panel in Pakistan - a 72-cell bifacial double-glass module from the JAM72D40 family (580-605W), with the 580/585/590W bins being what actually lands in Lahore and Karachi markets. As of 25 July 2026 a documented panel costs Rs 23,000-24,650 (about Rs 39-42.5 per watt), making it the cheapest Tier-1 n-type 585W-class panel on the market. It is also, for the same reason, the most price-confused: grey-market stock of the "same" panel is quoted a full Rs 6,000-7,000 cheaper.

Specifications

Spec

Value

Model family

JAM72D40 (LB double-glass bifacial / MB variants)

Wattage bins

580-605W (585W class = 580/585/590W street stock)

Cell technology

n-type TOPCon, Bycium+ cell, 182mm, 72-cell

Module efficiency

22.4-22.5%

Temperature coefficient (Pmax)

-0.29 to -0.30%/C (sources differ; JA's global datasheet says -0.29)

Degradation

1% first year, then 0.4%/year {/* VERIFY: single PK retail source */}

Build

Bifacial, double-glass

Dimensions / weight

2278 x 1134 x 30 mm, 28.3 kg (580W variant) {/* VERIFY: single source */}

Warranty (documented stock)

12-year product, 25-year performance (84.8% floor at year 25); 30-year power on newer Pro bins per JA global sheet

Honest assessment

Pros. You get real Tier-1 n-type cell tech - the same TOPCon architecture as Jinko's Tiger Neo and Trina's Vertex N - at Rs 800-2,100 less per panel than those rivals (July 2026 documented prices). Installer and comparison-guide consensus in Pakistan is consistent: JA is where informed buyers land when they want Tier-1 quality at the lowest documented cost. Hot-climate behavior is the concrete win: the low temperature coefficient holds output on 45C afternoons noticeably better than the P-type panels most 2022-2024 systems used.

Cons. Price chaos is the real ownership issue before you ever mount a panel. A 2026 market survey found the identical JA 585W quoted at Rs 27,500, Rs 31,000 and Rs 24,000 by three sellers in one week - documented, padded-retail, and grey/suspect stock respectively. JA's thinner distribution (vs Jinko) means specific wattage bins go out of stock, and dealers substitute bins or even the 4.0 Pro without updating paperwork. Community reports also flag P-type panels relabeled as "585W n-type bifacial" - the single most common JA-specific scam.

Who should buy. Net-metered homes and small commercial rooftops sizing 5-15kW, where the per-watt saving over Jinko/LONGi multiplies across 9-26 panels and the buyer can spend twenty minutes verifying serials. Skip it if you cannot get documented stock with a flash-test report - at that point a documented Trina at Rs 24,657 beats an unverifiable JA at any price.

Pakistan reality check

Heat and dust. At typical 60-65C summer cell temperatures a -0.30%/C panel gives up roughly 11-12% of nameplate - the 585W panel behaves like a ~515W panel at peak heat, versus ~500W for older P-type. The double-glass build resists microcracking from dust-storm cleaning cycles better than backsheet panels, but fortnightly-to-monthly cleaning remains mandatory for the quoted output.

Documents vs non-documents. Non-documents 585W-class JA stock trades around Rs 29-32/W (Rs 17,000-18,700 per panel). That is the warranty-less grey channel: no distributor claim path, no AEDB paperwork for net metering, and the highest overlap with counterfeit stock. The Rs 100,000-ish saving on a 10kW array is exactly what you lose the first time a string fails with nobody to claim against.

Counterfeit checks - do all three. (1) The serial barcode must be laminated inside the front glass; a paper sticker you could scratch off with a nail marks a fake. (2) Scan the QR and verify the serial on JA Solar's official verification portal - duplicate serials across panels mean fakes. (3) Demand the factory flash-test report for your exact serials showing each panel's tested output; genuine A-grade pallets always ship with one. Fourth, JA-specific: confirm the label reads JAM72D40 - JAM72S30/S40 on the label means you were handed P-type stock.

Warranty claim reality. Claims go through the importing distributor with invoice, serials and flash-test report. Documented stock: replacements happen, typically in weeks. Non-documents stock: there is no claim, full stop.

Price context vs rivals (585W class, documented, 25 July 2026)

  • JA DeepBlue 4.0 585W - Rs 23,000-24,650 (Rs 39-42.5/W)
  • Trina Vertex N 585W - Rs 24,657 (Rs 39.3-43/W): nearest rival; pay ~Rs 800 more for stronger brand recognition at resale.
  • Jinko Tiger Neo 585W - Rs 25,418 (Rs 40.65-45.5/W): ~Rs 1,600 more for Pakistan's widest distribution and easiest warranty logistics.
  • LONGi Hi-MO X7 585W - Rs 26,796 (Rs 42.5-46.2/W): ~Rs 2,100 more for a flatter degradation curve.

If a "JA 585W" quote is materially below Rs 23,000, it is non-documents, P-type relabeled, or fake - make the seller state which, on the invoice.

Frequently asked questions

What does a JA DeepBlue 4.0 585W panel cost in Pakistan?

Rs 23,000-24,650 per panel documented as of 25 July 2026, i.e. roughly Rs 39-42.5 per watt. Grey-market non-documents stock is quoted around Rs 17,000-18,700 (Rs 29-32/W) but carries no valid warranty.

Is the 585W bifacial worth it on a normal rooftop?

The double-glass build still helps with durability and heat, but bifacial rear gain is minimal on low, dark rooftops. Buy it for the n-type cell and temperature coefficient, not the bifacial marketing number.

How many DeepBlue 4.0 585W panels for a 10kW system?

Seventeen panels give 9.95kW DC; eighteen give 10.5kW. At July 2026 documented prices that is roughly Rs 390,000-445,000 in panels alone, before inverter, structure and installation.

How do I verify my 585W panels are genuine JA?

Check the serial barcode is laminated inside the front glass (not a paper sticker), scan the QR and verify the serial on JA's official portal, and demand the factory flash-test report listing your exact serials with tested wattage.

DeepBlue 4.0 vs 4.0 Pro - which is being sold as '585W'?

Both circulate. The 4.0 (JAM72D40 LB/MB, 580-605W) is the common 585W-class stock; the 4.0 Pro runs 590-615W. Dealers blur the names, so insist on the full model number on your invoice.

References