AG13 / LR44 Battery Equivalent Chart for Small Electronics

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AG13 and LR44 are often used as equivalent names for the same 1.5 V alkaline button-cell size. You may also see A76, L1154, LR1154, or similar markings. In many consumer devices these names point to the same physical battery class, but electronics designers still need to check chemistry, voltage behavior, holder dimensions, and circuit load.This guide focuses on small electronic devices and PCB design rather than retail battery selling. If the goal is to build or repair a device, the surrounding holder, contacts, switch, regulator, and low-power circuit matter as much as the battery code.

AG13 / LR44 Equivalent Chart

Marking	Common Meaning	Nominal Voltage	Typical Size	Notes
AG13	Common alkaline button-cell code	1.5 V	11.6 mm x 5.4 mm	Frequently cross-referenced with LR44
LR44	IEC alkaline designation	1.5 V	11.6 mm x 5.4 mm	Used on many data sheets and devices
A76	Common alkaline commercial code	1.5 V	11.6 mm x 5.4 mm	Energizer A76 data sheet maps to IEC-LR44
L1154 / LR1154	Size-based alkaline naming	1.5 V	11.6 mm x 5.4 mm	Check manufacturer cross-reference
SR44 / 357 / 303	Silver-oxide size-family alternatives	1.55 V	11.6 mm x 5.4 mm	Different chemistry and discharge curve

AG13 vs LR44: Are They the Same?

In most practical replacement charts, AG13 and LR44 are treated as equivalent alkaline cells. The important caveat is that branding and market naming can vary. If a device specifies a precise chemistry or a silver-oxide alternative, follow the device documentation.

The Energizer A76 data sheet lists manganese dioxide chemistry, IEC-LR44 designation, 1.5 V nominal voltage, and 150 mAh typical capacity under its specified load and cut-off conditions. That is a useful reference point, not a universal capacity guarantee for every AG13/LR44 cell.

Why Small Electronic Devices Fail Even With a New Battery

Many button-cell problems are mechanical or circuit-related. A new AG13/LR44 cell may not solve an issue if the spring contact is oxidized, the battery holder has lost tension, the switch is contaminated, or the circuit has excessive standby current. In those cases, the problem may sit closer to connectors and contacts than to the battery chemistry.

Symptom	Possible Cause	Component Area to Check
Device resets when tapped	Weak battery contact pressure	Holder, spring contact, PCB pad
Battery drains quickly	High sleep current or leakage	MCU, sensor, regulator, pull-ups
Dim LED output	Voltage sag or high load	LED current path, switch, cell chemistry
Intermittent operation	Oxidized contact or loose cover	Battery terminal and enclosure fit

When an AG13/LR44-powered device fails, the practical next checks often involve battery contacts, coin cell holders, small switches, low-power timer ICs, LDO regulators, battery protection circuits, and compact sensor modules.

Evidence Asset: AG13 Naming Map

AG13 is a market code, while LR44 is an IEC-style alkaline designation. This distinction helps avoid a common content problem: treating every equivalent code as electrically identical. The table below separates naming, chemistry, and design risk.

Name Seen by User	Likely Family	Technical Risk	Best Article Answer
AG13	LR44 alkaline size family	Brand-to-brand capacity variation	Usually equivalent to LR44/A76 size class
A76	LR44 alkaline size family	Load-dependent runtime	Use manufacturer data sheet for capacity context
L1154	LR44 alkaline size family	Ambiguous retail naming	Confirm dimensions and chemistry before replacement
357 / SR44	Silver-oxide size family	Different chemistry and voltage profile	May fit, but is not the same chemistry

Expert Judgment

For MOZ, AG13 should not be treated as a standalone commercial product topic. Its best use is as a bridge from consumer-style equivalent searches into engineering topics: holder reliability, contact design, low-leakage circuits, and small-device power management.

Clear conclusion: AG13/LR44 content should answer the equivalent question quickly, then move the reader toward practical electronics checks that generic battery charts usually ignore.

FAQ

Is AG13 the same as A76?

They are commonly cross-referenced for the same 11.6 mm x 5.4 mm alkaline button-cell class. Confirm with the device manual for sensitive equipment.

Is AG13 the same as 357?

Not exactly. 357 is commonly associated with silver-oxide chemistry, while AG13/LR44 is usually alkaline. They may be the same size family, but the discharge behavior differs.

Why not create AG13 product pages?

If MOZ does not sell batteries, AG13 should remain an educational article topic. The conversion path should be toward electronic components used in battery-powered devices.