Overview
The Varta Industrial Pro 4020 is a D-size (LR20, also sold as Mono) alkaline cell built for professional users who need long, predictable run time. Varta is a German battery maker founded in 1887 and is one of the best-known names in Europe. The Industrial range is sold in bulk to trades and workshops, so it is stripped of fancy retail packaging.
This listing is for two cells in a clear bag. The cells are printed Made in Germany, with a best-before date of December 2034, so you get a full shelf life of roughly eight years from today.
D-cells are the largest common alkaline size. They suit big torches, camping lanterns, portable radios, game callers, feeders and other equipment that draws steady current for many hours.
Key Features
- 1.5 V alkaline chemistry gives a flat, steady voltage across most of the discharge, which keeps torches bright and radios clear.
- Large D capacity (typically around 15-17 Ah at low drain) runs low and medium drain devices for a very long time between changes.
- Made in Germany, with a best-before date of 12.2034 printed on the cell.
- Industrial packaging means you pay for the cell and not the blister card, which suits users who go through batteries regularly.
- Leak-resistant construction and a long shelf life make the cells safe to keep as spares in a vehicle or field kit.
Technical Specifications
| Brand |
Varta |
| Series |
Industrial Pro |
| Type number |
4020 |
| IEC designation |
LR20 |
| Common names |
D, Mono |
| Chemistry |
Alkaline manganese |
| Nominal voltage |
1.5 V |
| Typical capacity |
About 16.5 Ah (typical) |
| Dimensions |
Approx. 33.2 mm diameter x 61.5 mm height (1.31 x 2.42 in) (typical) |
| Weight |
Approx. 140 g (4.9 oz) per cell (typical) |
| Best before |
12.2034 |
| Origin |
Germany |
| Pack |
2 cells in a clear bag |
Fit & Compatibility
The LR20 fits any device that calls for D, Mono, R20 or LR20 cells. That covers large Maglite-style torches, spotlights, camping lanterns, radios, game callers and feeders. They are not rechargeable, so do not use them in a charger. Do not mix them with old cells or other brands in the same device, because uneven discharge shortens run time and raises the risk of leaks.
Care & Maintenance
Store the cells in a cool, dry place away from metal objects that could short the terminals. Replace all cells in a device at the same time and remove them from gear you will not use for months. Never open, charge or burn alkaline cells, and recycle spent ones at a collection point.
Who It's For
Hunters, campers, farmers and workshop users who run big torches, lanterns and radios and want long run time at a fair price. Because the cells come two to a bag, they also suit anyone who needs a fresh spare pair for a torch.
FAQ
Are these the same as LR20 or Mono cells? Yes. D, Mono, R20 and LR20 all describe the same size. LR20 is the alkaline version.
Can I recharge them? No. They are single-use alkaline cells.
How fresh are they? The best-before date is December 2034.
