Index / 5047LF

5047LF

5047LF — lithium, 3 V, 52.2 x 28.6 x 14.4 mm. Current, and nothing else in the data shares its size.

Also stamped CRV3 (ELCRV3)

A box, not a coin

This one is a box, not a coin: 52.2 x 28.6 x 14.4 mm, so it has two cross-sections to match instead of one diameter. A cell that is right on width and wrong on length will not enter, and the terminals sit on top rather than on the faces.

Built for a load that alkaline cannot hold

Lithium is here for current, not for size. 5047LF delivers 3 V and holds it under a load that would drag an alkaline cell of the same envelope down within seconds. Energizer publishes an operating range down to -40 C (-40 F) for this cell, which is the reason it turns up in outdoor and automotive equipment.

3000 mAh in 24 cubic centimeters. Density is the whole argument for the chemistry, and it is why the compartment is small. Nothing else in the Energizer data this site reads shares this envelope, so a cell that fits the holder is almost certainly this one. Energizer files it for Asia Pacific and North America, which is where the part is sold rather than where the cell will work.

• The maker still lists it, under 1 product line: CRV3 (ELCRV3).

Drawn to scale

Every published figure

12 figures are published, and one is not: impedance. The row is absent rather than estimated. It reaches shelves as CRV3 (ELCRV3).

2 rows in the table are not the maker's but ours: stored energy and energy per cubic centimeter. Everything else is reproduced without change.

What the maker says about cold

The sheet for 5047LF carries an operating range as well as a capacity, and it reaches -40 C (-40 F) at the cold end. 3 more published figures follow it, and none of them reaches a cross-reference table.

The part occupies 24 cubic centimeters and weighs 32 g. Capacity and voltage together put 9000 milliwatt-hours in that space. Energizer files it for Asia Pacific and North America.

Operating range

-40 C (-40 F) to 60 C (140 F). Below the lower figure the maker makes no claim at all, which is not the same as the cell stopping.

Cutoff voltage

2 V. The published capacity is counted down to this voltage; a device that quits higher up sees less than the whole figure.

Mass against volume

32 g filling 24 cubic centimeters. When the printing has worn off, a kitchen scale separates two cells of one envelope faster than a caliper does.

Where the part is filed

Asia Pacific and North America. That is a statement about the maker's distribution and not about where the cell works.

Is that a lot of energy?

Nothing else measured shares this shell, so the comparison has to go site-wide: 9000 milliwatt-hours in 24 cubic centimeters is 375 mWh per cc, denser than 54% of every cell measured here. Density is ours: the maker publishes capacity and volume and never divides one by the other.

A width the catalog keeps returning to

not published mm is a width this catalog keeps coming back to: 0 boxes sit within half a millimeter of it, 5047LF included.

Its 375 milliwatt-hours per cubic centimeter sit above 54 percent of everything here that publishes both a capacity and a volume. 1 of the 50 boxes shares its 3 V exactly.

• 7.2H5 — the next step down by volume: 22 cubic centimeters against this cell's 24.
• 20F20 — the next step up: 27 cubic centimeters, 112% of this one.

The maker's own part numbers

5047LF carries 1 name beyond the designation, and every one of them is a manufacturer part number: a catalog line, not a size and not a standard.

• CRV3 (ELCRV3) — a manufacturer part number for 5047LF, not a standard designation.

Little here to confuse it with

Little gets confused with 5047LF. Nothing in the Energizer data this site reads shares its 52.2 x 28.6 x 14.4 mm envelope, and a box cell has three measurements to agree on rather than two, which makes a near miss rarer and a wrong one more obvious.

It stands 1 of 1 in this envelope by stored energy. On a scale the difference shows before it shows on a caliper: this one weighs 32 g.

One figure the maker does not publish

One field is empty for 5047LF: impedance. A blank means the maker publishes no figure, which is not the same as zero, and it is the reason one comparison below is missing rather than wrong.

The blanks are the same in all 1 record behind this designation, so they are the catalog's silence and not a merge losing a value. What is not missing is the envelope: 52.2 x 28.6 x 14.4 mm, published and checked against the designation itself.

• No impedance — so this page cannot tell you whether the cell can drive a pulse, which is the whole question in a watch or a sensor.

Before you swap anything

Everything here is computed from published dimensions and nominal voltages. That answers whether a cell enters the compartment and whether the voltage matches on paper. It does not answer what your device does with the difference, and it cannot: a cell that fits can still be the wrong cell.

One more limit, and it is the biggest. This site reads a single manufacturer’s catalog. When a page says a designation is not listed, that means Energizer no longer offers a part under it — not that nobody makes the cell. Other makers may still sell it, and for common sizes they usually do.

A voltage difference is one relation between two cells, and this page prints it from the cell it is about — in every table on the page, including the one listing cells no longer made. A figure always belongs to the cell whose voltage is printed beside it: a cell that runs lower than this one carries a minus here, one that runs higher carries a plus, and two cells at the same nominal voltage carry zero. Meet the same pair on the other cell’s page and the sign is the other one, with the figure taken against that cell instead of this one; where the two run at the same voltage, both pages print zero. The class beside the figure is not read off that figure directly. It is decided on the gap itself, taken against the higher of the two nominal voltages, so one pair of cells gets one class whichever page you meet it on: counted from this side the boundary of the class that still runs falls at 20.0% below and 25.0% above, which is the same gap divided once by the larger nominal and once by the smaller. What genuinely differs between the two directions is the consequence, and the words carry it: a cell that runs low makes a calibrated instrument read below true, and a cell that runs high makes it read above.

3 things this site cannot see. Whether the contacts reach a shorter cell. Whether the device was calibrated for a chemistry that holds its voltage flat, which silver oxide does and alkaline does not. Whether the equipment tolerates the higher current a different chemistry can deliver. Rechargeable cells are never a drop-in for primary cells regardless of size.

Where these numbers come from

Dimensions, voltages, chemistries and capacities are published by the manufacturer and reproduced without change. Everything else on the page is ours, computed from those figures: whether one cell fits where another sat, how far apart their voltages are, stored energy and energy per cubic centimeter, the rank within a shell, and the check of the designation against the measured size.

Fit is decided within 0.3 mm on every axis, which is the order of a contact spring's travel. Voltage classes are decided by consequence, not by roundness, and they are decided on the gap between two nominal voltages taken against the higher of the two: 2.0% or less of it is the same working voltage, 6.0% starts to matter to a calibrated instrument, and past 20.0% it is a different class altogether. Measuring the gap against the higher figure is what makes the verdict the same from either cell’s page, while the printed percentage stays counted from the cell you are reading about. Cells with identical stored energy share a rank instead of being ordered arbitrarily.

Ranking uses capacity times nominal voltage, because capacity alone is not comparable across chemistries: 150 mAh at 3 V is twice the energy of 150 mAh at 1.5 V. Neighbors are chosen by measurement and never alphabetically, because two cells filed next to each other by name usually have nothing in common. A blank in any table means the maker publishes no figure, which is not the same as zero.

Source: Energizer technical data, retrieved 1 September 2026.

The record behind this page

Every figure on this page comes from one catalog record, number 246, and it is linked below. The sheet is the document the dimensions, voltage and capacity were read out of.

1. [1] Energizer catalog record 246, listed as CRV3 (ELCRV3), active in the snapshot. Technical data sheet: crv3.pdf.

Every figure above is reproduced from those records without change; the comparisons are ours and are described on the method page. Snapshot: Energizer technical data, retrieved 1 September 2026.

Putting this on a forum or a repair page? The same answer without the site around it — fit, voltage, chemistry and the limits that go with them — is at /embed/5047lf/. It loads nothing from anywhere else. Paste this:

<iframe src="https://batterycross.com/embed/5047lf/" width="100%" height="520" loading="lazy" title="5047LF replacements"></iframe>