Last updated: September 2026. Figures checked against the live LinkSolar pages on 25 September 2026.
Sixty cells at roughly half a volt each is why a 60-cell panel works at around 30 V, not 12 V.
A 60-cell solar panel is a module of 60 crystalline silicon cells wired in series in a 6 × 10 grid. It works at around 30 to 32 V at maximum power and is typically rated around 280 to 400 W. A 72-cell module adds 12 cells for about 38 V, and a half-cut 120-cell module keeps the 60-cell voltage class with half-size cells.
The sections below explain what 60-cell means on a label, how single cells become a module, and how the 60, 72 and 120 half-cut formats compare. They then apply the same cell-count arithmetic to a small or custom panel, line up per-cell specs in one table, and close with what a supplier needs for a custom module. Builders working from bare silicon can compare formats among LinkSolar's loose solar cells for module assembly, which are sold by the pack rather than as finished 60-cell modules.
What does 60-cell mean on a solar panel?
A 60-cell solar panel is a crystalline silicon module whose 60 cells are wired in series in a 6 × 10 grid, so its voltage is roughly 60 times the voltage of one cell. Each silicon cell works at around 0.5 V at its maximum power point, and the series string adds those small voltages into one module output. The 60 on the label counts cells; voltage and wattage are separate ratings on the datasheet.
According to PVEducation's module circuit design notes, residential and field modules usually contain 60 or 72 cells, and 96-cell modules are much less common. Its example table at standard test conditions (STC) lists a 36-cell module at 19.2 V maximum power voltage and 170 Wp, a 60-cell module at 31.4 V and 280 Wp, and a 72-cell module at 37.9 V and 340 Wp. All three carry about 8.9 A, because adding cells in series raises the voltage while the current stays set by the size of each cell.
The 36-cell example matches the format PVEducation describes for most 12 V battery-charging modules, and the 60 and 72-cell rows are its example home and field modules. Newer cells push output higher, and 60-cell modules on the market today are typically rated around 280 to 400 W depending on cell generation.
A 60-cell module is typically about 1.65 × 1.0 m, around 65 × 39 to 41 in, and weighs around 18 to 21 kg. According to PVEducation's module structure page, 60-cell modules were designed for ease of handling in residential use, while the heavier 72-cell modules were aimed at utility sites with cranes and lifts. A 72-cell module adds two more rows of six cells and is typically about 2 m long.
If you are counting modules for a roof rather than cells for a build, the guide on how many panels a house needs works through that sizing.
How many solar cells are in a solar panel, and how do they become a module?
A solar panel contains as many cells as its voltage needs, usually 36 for a 12 V charging panel and 60 or 72 for a home or field module. Each silicon cell adds roughly 0.5 to 0.6 V under load, whatever its size, and the area of the cell sets the current.
A solar cell is a single photovoltaic device. A solar panel, also called a module, is an assembly of cells wired together, sealed by encapsulation and often framed. So a crystalline panel always has cells inside it, and bare cells need a glass, PET or ETFE laminate before they can be used outdoors.
Cells in series stack like batteries in a flashlight: the voltages add up, while the current stays that of one cell. Wiring cells in parallel adds current instead. According to PVEducation, module voltage is set by the number of cells and current mainly by cell size, which is why 36 cells in series give about 21 V open circuit and about 17 to 18 V at maximum power and operating temperature.
The same arithmetic explains the bigger formats. Sixty cells in series land in the low 30 V range at maximum power, and 72 cells add 12 more for a higher voltage class, around 38 V in PVEducation's example. The current of both modules still depends on the size of the cells used, not on how many there are.
Turning cells into a module happens in three stages. Cells are joined by interconnect ribbon or strips into series strings, and a 60 or 72-cell module usually carries three bypass diodes across those strings. The strings are then laminated behind glass, PET or ETFE, and the module is often framed.
Because every cell in a series string carries the same current, shading or damage to one cell can affect the whole string. That is also why cells in one string are kept the same size before they are joined.
Small panels follow the same rules with fewer or cut cells, and hand-built panels add tabbing, layup and lamination work that has its own guide on building a panel from bare cells step by step. The count logic above is what carries over from a 36-cell charging panel to a 60-cell module and back down to a custom panel sized for one device.
60-cell, 72-cell or half-cut 120-cell: what actually changes?
A 60-cell, 72-cell or half-cut 120-cell solar panel differs in voltage, current and size: adding cells raises the voltage, cutting cells lowers the current, and the module outline follows the cell count. A 72-cell module adds two rows of six cells for about 38 V at maximum power. A half-cut 120-cell module typically keeps the 60-cell voltage class by splitting every cell in half and wiring two half-modules in parallel.
A 72-cell module puts 12 more cells into the same series string, so its voltage rises with the count. According to PVEducation's notes on module circuit design, its example 72-cell module works at 37.9 V with an open-circuit voltage of 47.3 V, against 31.4 V and 39.3 V for the 60-cell example, at about the same current. Watt ratings follow, so 72-cell modules typically rate higher.
The two extra rows also make the module longer and heavier. According to PVEducation's page on module structure, 60-cell modules were designed for ease of handling on homes, while heavier 72-cell modules for utility sites with cranes and lifts. A 72-cell module still suits a house when the system is designed for its size.
A half-cut cell is a full cell sliced in two, and it keeps the full cell's voltage while carrying about half its current. In the LinkSolar catalogue, the 125 mm back-contact IBC cell holds 0.625 V at every cut, while current falls from 6.05 A full to 3.03 A as a half. The 166 mm bifacial PERC cell splits the same way, listed at 5.89 W full and 3 W as a 166 × 83 mm half.
In a half-cut 120-cell module, the halves typically form two parallel half-modules, so the module voltage stays in the 60-cell class while each string carries roughly half the current. Lower current per string means lower ribbon loss, the usual reason given for half-cut layouts. LinkSolar also lists a 158.75 × 79 mm PERC half-cell format for compatible half-cell module layouts.
Newer modules typically use 108 or 132 half cells under the same two rules: the series count sets the voltage and the cell cut sets the current. Per-cell figures for each size and cut are in 125 mm versus 166 mm cells and their cuts.
How do you use cell count to size a small or custom panel?
A small or custom solar panel is sized with the same two rules that make a 60-cell module: the number of cells in series sets the voltage, and the cell area, or the cut, sets the current. Each silicon cell gives roughly 0.5 to 0.6 V under load regardless of its size. A panel for any input is therefore a count question first and a current question second.
- Write down the target voltage. Use the working voltage that the load, the regulator or the battery charger input needs.
- Divide by the Vmp of your cell. The listed cells run between 0.5 V and 0.625 V at maximum power, so round the cell count up to leave margin for heat and low light.
- Choose the cell size or cut for the current. A cut keeps the cell voltage and divides the current by area, so a 125 mm back-contact cell drops from 6.05 A as a full cell to 1.01 A as a one-sixth strip.
- Multiply cells × Vmp × Imp to check the watts. Expect the finished panel to rate a little lower than that figure, typically because of ribbon, glass and mismatch losses.
- Keep every cell in the string the same size. The smallest cell limits the string current, so a mixed string runs at the rate of its weakest piece.
- Decide who assembles the panel. Every one of the small cells and strips for hand-soldered builds tabs with an ordinary soldering iron, while TOPCon and half-cut PERC cells use thin round-wire contacts designed for stringing machines.
A worked example, using catalogue figures for the arithmetic: 30 one-sixth cuts of the 125 mm back-contact cell at 0.625 V and 1.01 A give about 18.75 V and about 19 W before cell-to-module loss. Each cut measures 125 × 20.8 mm, so all 30 pieces match and no cell holds the string back. The same logic applies to a 5 V USB rail, where typically 8 to 12 cells in series feed a regulator, and the article on why no single cell gives 5 V covers that stage.
When the outline calls for a strip width that no listed cut matches, the cut itself can follow the drawing, as described in cutting cells to a drawing. For production quantities, pre-tabbed strings or cells laminated into a finished mini panel, LinkSolar quotes from stock material once it has the drawing or the target voltage and current.
Specs to compare before you order cells for a panel
The specs to compare before ordering solar cells for a panel are the cell size, the voltage and current at maximum power (Vmp and Imp), the watts per cell, and whether the cell can be hand-soldered. Together they set how many cells a panel needs to reach its target voltage and whether a soldering iron or a stringing machine has to build it. Contact layout trade-offs are covered in back-contact versus standard mono cells for builders.
Vmp multiplied by the number of cells in series gives the string voltage, so 60 cells at 0.62 V come to about 37 V. Imp stays that of one cell, which is why the cell size or cut sets the current. When a listing gives watts but no Vmp, plan the string around the typical 0.5 to 0.6 V per cell under load and confirm it with the supplier.
The table below compares the loose cells listed on the LinkSolar cell pages and multiplies each one by 60 in series to show where a 60-cell layout would land.
| Cell format | Size | Vmp / Imp per cell | Watts per cell | 60 in series gives (before module losses) | Assembly |
|---|---|---|---|---|---|
| 125 mm back-contact IBC | 125 × 125 mm | 0.625 V / 6.05 A | 3.78 W | About 37.5 V, about 227 W | Hand or machine, sold full or cut |
| 166 mm back-contact IBC | 166 × 166 mm | 0.60 V / 11.0 A | 6.60 W | About 36 V, about 396 W | Sold full or pre-cut |
| 166 mm mono PERC | 166 × 166 mm | Not listed | 6.04 W | About 362 W | Machine stringing |
| 166 mm bifacial PERC, half cell | 166 × 83 mm | Not listed | 3 W | 120 halves: about 360 W | Machine stringing |
| Half-cell PERC | 158.75 × 79 mm | 0.5 V / not listed | 2.7 W | 120 halves: about 30 V, about 324 W | Machine stringing |
| N-type TOPCon bifacial | 182 × 183.75 mm | 0.62 V / 14 A (Voc 0.75 V) | 8.54 W | About 37.2 V, about 512 W | Machine stringing |
| 156 mm mono | 156 × 156 mm | 0.55 V / not listed | 4.8 W | About 33 V, about 288 W | Module assembly |
| 125 mm mono | 125 × 125 mm | 0.57 V / not listed | 3.07 W | About 34.2 V, about 184 W | Module assembly |
Every row is a loose cell sold by the pack, so match the format to your string plan and order PERC, TOPCon and back-contact cells by the pack.
Per-cell figures come from the LinkSolar catalogue export of 23 September 2026 and the live cell pages on 25 September 2026. The 60-in-series column is cell arithmetic, and a finished module rates lower because of ribbon, glass and mismatch losses. The two back-contact rows are the SunPower back-contact cells listed in the cell collection.
What should you send a supplier for a custom photovoltaic cell module?
A custom photovoltaic module is a solar panel whose cell count, cell cut and outline are chosen for one product, so the supplier needs the target voltage and current, the outline, the lead type and the exposure before it can set the cell layout. Send the six items below in the first message.
- Target Vmp and Imp. If those figures are not fixed yet, describe the load, regulator or battery the panel feeds and the input voltage it expects.
- Outline drawing or CAD file. Mark the overall dimensions, mounting holes and any cut-outs the cell area has to avoid.
- Cell preference. Ask for back-contact cells where the area is small and output per area matters, standard PERC where cost per watt matters more, or ask the supplier to advise.
- Lamination by exposure. State where the panel will sit and whether it must stay rigid, so the supplier can choose between glass, ETFE and PET.
- Lead or connector and exit side. Name the termination, such as JST, MC4, bare tails or solder pads, and the edge where the cable should leave the panel.
- Target quantity. Give the prototype count and the expected production volume, since both affect which cell stock and assembly process fit the job.
LinkSolar works as a sourcing partner, and its partner factories build custom panels with the cell count set by your target voltage at 3 V to 48 V, including odd rails for direct-drive designs. Device-sized products go through custom mini panels built to a device outline, typically 0.1 to 20 W with mm-level outlines, rings and cut-outs. Engineering teams that want the mini-panel options in one document can share the custom mini panel capability datasheet.
The mini-panel workflow runs from requirements intake to a design and prototype with IV checks, then production. Before production, a written specification covering dimensions, Vmp, Imp, lamination, connector and tolerances is agreed, and the cell type is confirmed in writing. Production QA at the partner factories includes EL imaging, IV binning and visual inspection.
For cells or a panel going into a product you sell, ask the supplier for its test report.
FAQ: 60-cell panels and solar cell counts
How many solar cells are in a solar panel?
A solar panel has as many cells as its working voltage requires. A 12 V charging panel typically uses 36 cells in series, while home and field modules usually carry 60 or 72 cells.
Half-cut versions of those modules split every cell, so they carry 120 or 144 half cells. Small device panels use whatever count their target voltage needs.
Does a solar panel have cells?
Yes, a crystalline silicon solar panel is a laminated string of individual cells wired together behind glass or a polymer film. Each cell is a single photovoltaic device, and the panel is the assembly.
In thin-film panels, the active layer is typically deposited as one sheet and then scribed into narrow cells that are connected in series on the same substrate.
What voltage is a 60-cell solar panel?
A 60-cell solar panel typically works at around 30 to 32 V at maximum power and around 38 to 40 V open circuit. PVEducation's example 60-cell module is listed at 31.4 V at maximum power and 39.3 V open circuit at STC.
That voltage is too high to connect straight to a 12 V battery. It needs a charge controller or inverter that accepts that input range.
How do you create a custom photovoltaic cell module?
A custom photovoltaic cell module starts with the target voltage, which sets the number of cells in series. The cell size or cut is then chosen to cover the current, and the cells are laid out to fit the product outline.
The string is laminated in glass, ETFE or PET for its exposure and then IV tested. A supplier sets that layout from six inputs: target Vmp and Imp, outline, cell preference, lamination, lead type and quantity.
Next step
Cell count sets the voltage, the cell size or cut sets the current, and the panel format follows from both. Send the target voltage, current and outline, and ask for the cell layout to be confirmed in writing before you order.
To request a quote for a built panel, use the custom solar panel quote page. To buy cells and assemble the panel yourself, compare formats in the full solar cell range.