--- title: "DMEGC DM455M10RT-B54HBB vs DMEGC DM455M10RT-B54HBT - Solar Panel Comparison | ComparePV" description: "Compare DMEGC DM455M10RT-B54HBB vs DMEGC DM455M10RT-B54HBT side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-solar-hengdian-group-dmegc-magnetics-co-ltd-dm455m10rt-b54hbt" updated: 2026-09-11 --- # DMEGC DM455M10RT-B54HBB vs DMEGC DM455M10RT-B54HBT Identical on every published parameter All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [DMEGC DM455M10RT-B54HBB](https://comparepv.com/panel/dmegc-hengdian-group-dm455m10rt-b54hbb) | [DMEGC DM455M10RT-B54HBT](https://comparepv.com/panel/dmegc-solar-hengdian-group-dmegc-magnetics-co-ltd-dm455m10rt-b54hbt) | | Manufacturer | DMEGC | DMEGC | | Power | 455 Wp | 455 Wp | | Efficiency | 22.80 % | 22.80 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | B54HBB | B54HBT | | --- | --- | --- | | Rated power | 455 Wp | 455 Wp | | Module efficiency | 22.80 % | 22.80 % | | Power density | 227.7 Wp/m² | 227.7 Wp/m² | | Open-circuit voltage | 40.45 V | 40.45 V | | Voltage at max power | 34.11 V | 34.11 V | | Short-circuit current | 14.24 A | 14.24 A | | Current at max power | 13.34 A | 13.34 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 24.5 kg | 24.5 kg | | Weight per kWp | 53.8 kg/kWp | 53.8 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 108 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, B54HBB:** 15,266 kWh - **Cumulative output, B54HBT:** 15,266 kWh - **Gap:** No difference ## Output when hot | Condition | Cell temperature | B54HBB | B54HBT | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 455 W | 455 W | 100.0% of rated power | | Cool, bright day | 40 °C | 435 W | 435 W | 95.7% of rated power | | Typical summer roof | 55 °C | 415 W | 415 W | 91.3% of rated power | | Hot roof | 70 °C | 396 W | 396 W | 87.0% of rated power | ## Against the whole database | Measure | B54HBB | B54HBT | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,714 | #2,714 | 14,005 | Tied - the same position in the database | | Power density | #2,888 | #2,888 | 14,005 | Tied - the same position in the database | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #7,897 | #7,897 | 14,005 | Tied - the same position in the database | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,669 | #5,669 | 14,005 | Tied - the same position in the database | ## Questions ### Which panel is better: DMEGC DM455M10RT-B54HBB or DMEGC DM455M10RT-B54HBT? According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of DMEGC DM455M10RT-B54HBB and DMEGC DM455M10RT-B54HBT? **DMEGC DM455M10RT-B54HBB** has a module efficiency of **22.80%**, while **DMEGC DM455M10RT-B54HBT** is **22.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does DMEGC DM455M10RT-B54HBB use vs DMEGC DM455M10RT-B54HBT? **DMEGC DM455M10RT-B54HBB** uses **TOPCon** cells; **DMEGC DM455M10RT-B54HBT** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on DMEGC DM455M10RT-B54HBB and DMEGC DM455M10RT-B54HBT? **DMEGC DM455M10RT-B54HBB** has a **30 years** power warranty; **DMEGC DM455M10RT-B54HBT** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are DMEGC DM455M10RT-B54HBB and DMEGC DM455M10RT-B54HBT bifacial panels? Both **DMEGC DM455M10RT-B54HBB** and **DMEGC DM455M10RT-B54HBT** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [DMEGC DM455M10RT-B54HBB vs DMEGC DM465M10RT-B54HBW](https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-solar-hengdian-group-dm465m10rt-b54hbw) - 3 differences, the largest is module efficiency - [DMEGC DM455M10RT-B54HBB vs DMEGC DM460M10RT-B54HBB](https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-hengdian-group-dm460m10rt-b54hbb) - One difference: module efficiency - [DMEGC DM455M10RT-B54HBB vs DMEGC DM460M10RT-B54HBW](https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-solar-hengdian-group-dm460m10rt-b54hbw) - One difference: module efficiency - [DMEGC DM455M10RT-B54HBB vs DMEGC DM460M10RT-B54HBT](https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-solar-hengdian-group-dmegc-magnetics-co-ltd-dm460m10rt-b54hbt) - One difference: module efficiency - [DMEGC DM455M10RT-B54HBB vs DMEGC DM455M10RT-B54HBW](https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-solar-hengdian-group-dm455m10rt-b54hbw) - The same specification on paper - [DMEGC DM455M10RT-B54HBB vs DMEGC DM450M10RT-B54HBB](https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-hengdian-group-dm450m10rt-b54hbb) - One difference: module efficiency --- Source: https://comparepv.com/compare/dmegc-hengdian-group-dm455m10rt-b54hbb/dmegc-solar-hengdian-group-dmegc-magnetics-co-ltd-dm455m10rt-b54hbt Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.