---
title: "JA Solar JAM60D41 510/LB 510W Solar Panel - Specs & Review | ComparePV"
description: "JA Solar JAM60D41 510/LB 510W solar panel. Specs: 23.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient."
source: "https://comparepv.com/panel/ja-solar-jam60d41-510-lb"
updated: 2026-09-11
---

# JA Solar JAM60D41 510/LB

Solid all-round for its segment

432 panels in the segment TOPCon 500-550 W


## Identity

- **Manufacturer:** JA Solar
- **Model:** JAM60D41 510/LB
- **Series:** JAM60D41 LB
- **Rated power:** 510 W
- **Cell technology:** TOPCon
- **Bifacial:** yes


## How it compares

Compared against segment TOPCon 500-550 W (432 panels).


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Power (Wp) | 510 W | 510 W | Typical |  |
| Module efficiency | 23.00% | 22.73% | Typical | 1,919 |
| Power density | 230.3 | 227.4 | Typical | 1,849 |
| Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 |
| Weight (kg) | 27.3 kg | 27.0 kg | Typical |  |
| Performance warranty | 30 yrs | 30 yrs | Typical | 21 |


### Full peer table


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Module efficiency | 23.00% | 22.73% | Typical | 1,919 |
| Power density | 230.3 | 227.4 | Typical | 1,849 |
| Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 |
| Weight per kWp | 53.5 | 52.4 | Typical | 7,509 |
| Performance warranty | 30 yrs | 30 yrs | Typical | 21 |

- **Best for:** Residential, commercial and shaded-installations.


## Specification


### Electrical

- **Rated power (Pmax):** 510 W
- **Efficiency:** 23.00 %
- **Voltage at Pmax (Vmp):** 37.31 V
- **Current at Pmax (Imp):** 13.67 A
- **Open-circuit voltage (Voc):** 44.25 V
- **Short-circuit current (Isc):** 14.54 A
- **Max system voltage:** 1500 V


### Temperature

- **Temperature coefficient of Pmax:** -0.290 %/degC
- **Temperature coefficient of Voc:** -0.250 %/degC
- **Temperature coefficient of Isc:** 0.045 %/degC
- **NOCT:** 45 degC


### Cell and construction

- **Cell type:** Monocrystalline
- **Cell technology:** TOPCon
- **Cell count:** 120
- **Bifacial:** yes
- **Bifacial gain:** 10.00


### Physical

- **Length:** 1953 mm
- **Width:** 1134 mm
- **Thickness:** 30 mm
- **Weight:** 27.3 kg
- **Area:** 2.21 m2
- **Power density:** 230.3 Wp/m2


### Warranty and degradation

- **Product warranty:** 12 years
- **Performance warranty:** 30 years
- **First-year degradation:** 1.00 %
- **Annual degradation:** 0.40 %
- **Output after 30 years:** 446 W


## Rank in the whole catalogue


| Measure | Position |
| --- | --- |
| Efficiency | 1919 of 14005 |
| Power density | 1849 of 14005 |
| Temperature coefficient | 2165 of 14005 |
| Weight | 7509 of 14005 |
| Warranty | 21 of 14005 |


## Pros

- **Up to 23% efficiency — segment leader** - The 510 Wp variant reaches 23% module efficiency, outperforming the direct peer Trina Solar Vertex Backsheet (21.2%) by 1.8 percentage points and matching Sunlike SKT510 (22.93%). In practice, this means higher energy yield per unit of roof or ground area.
- **N-type TOPCon — low degradation and better TC** - N-type TOPCon cells exhibit first-year LID degradation of just 1%, followed by only 0.4%/year for the remaining 29 years. The Pmax temperature coefficient is −0.29%/°C, better than typical PERC modules (−0.34 to −0.36%/°C), translating to higher summer yield.
- **80% bifaciality + glass-glass construction** - The rear side contributes an additional 4–12% energy output depending on ground albedo (snow, light gravel, white membrane), without increasing footprint. The glass-glass encapsulation (30 mm) provides superior moisture and corrosion protection for n-type TOPCon cells compared to standard backsheets — particularly valuable in flat-roof, carport, and coastal installations.
- **30-year linear power warranty (≥87%)** - JA Solar guarantees at least 87% of rated power after 30 years of operation, consistent with a 0.4%/year degradation rate. Most backsheet-based peer comparables (e.g., Trina Vertex) offer a standard 25-year warranty with 84.8% retention, making this series stronger for long-term yield certainty.
- **JA Solar BNEF Tier-1 — bankability and supply reliability** - JA Solar appears on the BNEF Tier-1 Q2 2026 list as one of the largest manufacturers exceeding 80 GW annually. Tier-1 status enables non-recourse project financing by banks and ensures warranty enforceability — critical for commercial investors and prosumers requiring installation insurance.


## Cons

- **27.3 kg weight — structural load concern** - The glass-glass construction weighs 27.3 kg, approximately 25–35% heavier than comparable glass-backsheet modules (~20–22 kg). On rooftops with limited load-bearing capacity, this may require structural reinforcement or a reduced module count, increasing BoS costs.


## About this series

The JA Solar JAM60D41 LB series are bifacial glass-glass modules designed to genuinely increase energy yield in locations where reflected light from the ground surface is significant. The application of **n-type TOPCon cells** helps minimize typical degradation-related losses over time and maintains stable performance for years. The half-cell architecture with multiple current conductor busbars improves performance under partial shading and reduces module electrical losses. The key advantage of this series is **bifaciality** - the rear side operates on both diffuse and reflected light, offering additional potential generation without increasing roof or ground footprint. Thanks to the **glass-glass construction**, panels withstand moisture, UV exposure, and mechanical stress better, making them ideal for flat roofs, carports, and installations near coastlines or agricultural areas. In practice, the JAM60D41 LB modules are chosen by investors seeking **greater yield per square meter** and a durable module - without compromising aesthetics, as the LB variant features a refined, dark appearance.


## Notable figures

- Efficiency of 23.0% matches the \*\*TOPCon 500-550W\*\* median
- At 230.3 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels
- At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 500-550W\*\* panels
- 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
- Ranked #1919 out of 14005 panels for efficiency in the database


## Questions


### What warranty does the JA Solar JAM60D41 LB series come with?

The JAM60D41 LB series includes a 12-year product warranty covering material and workmanship defects, and a 30-year linear power output warranty. JA Solar guarantees no more than 1% degradation in year one and 0.4% per year thereafter, meaning the module retains at least 87.4% of its rated power output after 30 years of operation.


### What does bifacial technology mean for the JAM60D41 LB and when does it really pay off?

Bifacial technology means the rear side of the panel also generates electricity from reflected and diffuse irradiance. In real-world conditions this can deliver a few to over ten percent additional energy yield compared to a standard monofacial module. The highest gains are achieved on flat rooftops with white membranes, ground-mount systems with bright surfaces, carports, and agri-PV installations where ground albedo is high.


### Are the JA Solar JAM60D41 LB panels suitable for flat roofs or carport installations?

Yes, these are among the primary use cases for this series. The double-glass construction provides mechanical robustness – the panel withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa – along with excellent resistance to moisture and UV exposure. On flat roofs or under carports, the bifacial cells also benefit from light reflected off the surface below, further increasing overall system yield.


### How do JAM60D41 LB panels perform on hot days and at high temperatures?

N-type TOPCon cells have a lower temperature coefficient than standard PERC cells. The JAM60D41 LB series has a Pmax temperature coefficient of −0.29%/°C, meaning a 10°C temperature increase results in less than 3% power loss. This is a key advantage for installations in sun-intensive climates or on rooftops with limited airflow beneath the modules.


### What does the LB designation mean in JAM60D41 LB and does it affect performance?

LB stands for full black – the module features a black frame, black cells, and a black backsheet laminated between the double glass, giving it a sleek, uniform appearance. This has no negative impact on electrical performance or warranty terms. The LB variant is particularly popular on dark-tile rooftops or visually prominent installations such as carports and building-integrated PV facades.


### What is the peak power of the JA Solar JAM60D41 LB panel and how many modules fit a typical 10 kW inverter?

The peak power of this series is 510 Wp per module. For a 10 kW inverter with a typical DC/AC ratio of 1.15–1.2, you generally need 20–22 panels, resulting in a total installed capacity of roughly 10.2–11.2 kWp. The exact string configuration depends on the inverter's MPPT voltage range and input limits, so always verify the design with a certified installer.


## Datasheet

[Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/54-jam60d41-lb-en-ja-solar-jam60d41-485-510-lb-datasheet-a96395d13566.pdf)


## Alternatives


| Panel | Power | How it differs |
| --- | --- | --- |
| [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.0 pp |
| [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +1.8 pp |
| [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +50 W, cooler, +1.8 pp |
| [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +1.7 pp |
| [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +45 W, cooler, +1.6 pp |
| [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.5 pp |
| [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.5 pp |
| [JA Solar JAM60D41 485/LB](https://comparepv.com/panel/ja-solar-jam60d41-485-lb) | 485 W | -25 W, -1.1 pp |
| [JA Solar JAM60D41 490/LB](https://comparepv.com/panel/ja-solar-jam60d41-490-lb) | 490 W | -20 W, -0.9 pp |
| [JA Solar JAM60D41 495/LB](https://comparepv.com/panel/ja-solar-jam60d41-495-lb) | 495 W | -15 W, -0.6 pp |
| [JA Solar JAM60S40-500/LR](https://comparepv.com/panel/ja-solar-jam60s40-500-lr) | 500 W | -10 W, lighter, -0.4 pp |
| [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +40 W, lighter, +1.4 pp |
| [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +30 W, lighter, +1.4 pp |
| [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +30 W, lighter, +1.4 pp |
| [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +35 W, cooler, +1.3 pp |
| [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +35 W, cooler, +1.2 pp |


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Source: https://comparepv.com/panel/ja-solar-jam60d41-510-lb

Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.