CellChart
Rechargeable coin

LIR2450 battery: equivalents & specs

The LIR2450 is the largest common rechargeable lithium-ion coin cell: the CR2450's 24.5 by 5 mm case, nominal 3.6 volts, and 100 to 120 mAh per charge. It serves solar-charged devices, maker projects and hardware designed around rechargeable coins.

LIR2450 battery drawing: 24.5 mm across, 5 mm thick LIR2450 3.6V + ⌀ 24.5 mm 5 mm
LIR2450, face and side profile, drawn to scale: 24.5 mm across, 5 mm thick.
Voltage
3.6 V
Size (D×H)
24.5 × 5 mm
Chemistry
Lithium-ion (rechargeable)
Capacity
100-120 mAh (rechargeable)

Compatible replacements

  • CR2450: Primary 3 V cell of the same size with five times the one-shot capacity.

⚠️ Not a substitute for the CR2450 in devices designed for a 3 V primary cell.

Buying and replacement notes

With 120 mAh and 500-odd cycles, an LIR2450 can deliver more lifetime energy than a drawer of CR2450s, provided the device is designed for its voltage and can recharge it. That last clause does the heavy lifting: fitted into an ordinary CR2450 gadget, it overdrives the circuit and dies in a fraction of the time, unrecharged. Know which battery your device was engineered for.

Commonly used in

rechargeable-design sensorsDIY and maker projectssolar-charged devices

Need a replacement?

Shop LIR2450 batteries on Amazon →

Comparisons

CR2450 vs LIR2450

⚠️ Keep away from children. Swallowed button batteries, especially 20 mm lithium coins, cause severe injury within hours. If a child swallows one, call the 24/7 National Battery Ingestion Hotline (US) at 800-498-8666 or poison control at 800-222-1222 immediately. What every parent should know.

Frequently asked questions

Can the LIR2450 replace a CR2450 in an LED candle?
It fits, and the candle may even run brighter briefly, but the 3.6-4.2 V output stresses the LED driver and the 110 mAh charge dies in a fifth of the time, after which you must remove and recharge it externally. For candles, a primary CR2450 is simply better.
What projects suit the LIR2450?
Anything with charging built in: solar-powered sensor nodes, USB-rechargeable wearables, and microcontroller projects where you add a proper Li-ion charge IC with 4.2 V termination and current limiting. It is a favorite in the ESP32 low-power community.
How should I charge an LIR2450?
With a Li-ion charger terminating at 4.2 V, current limited to around 50 mA or less (0.5C). Dedicated coin cell chargers and TP4056-class modules configured for low current both work. Never charge it in a holder wired straight to a power supply.

More Rechargeable coin cells

LIR2032LIR2016LIR2025ML2032ML2016ML2020ML1220VL2020CTL1616