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Ultralast
Ultralast UL389 389 Silver Oxide Coin Cell 82mAh 1.5V standard battery
Silver oxide coin cell delivers 82mAh at 1.5V and replaces SR54, D389, 389BP, 390 and 1138SO
- TypeBatteries
- Battery Pack1-pack
- Battery Type389 Silver Oxide Coin Cell
- Battery Capacity82mAh
- Battery Voltage1.5V
- FeatureReplaces SR54, D389, 389BP, 390, 1138SO
- 82mAh silver-oxide chemistry powers small devices reliably
- 5V output matches original equipment specifications exactly
- Replaces SR54, D389, 389BP, 390, 1138SO for wide compatibility
- Single-cell pack keeps spares minimal and fresh
- New condition guarantees full rated capacity from first use
Ultralast 389 silver-oxide coin cell
The Ultralast UL389 is a 1.5 V silver-oxide coin cell rated at 82 mAh. It comes as a single battery in a 1-pack. The cell is designed to power small electronic devices that require this specific chemistry and form factor.
Who this suits and who it does not
This cell suits owners of watches, calculators, medical devices or other equipment that specifies a 389 size silver-oxide battery. It is not for devices that need a higher capacity, a different voltage or a rechargeable chemistry.
The deciding specification
The critical specification is the 389 silver-oxide chemistry at 1.5 V and 82 mAh capacity. The cell also replaces SR54, D389, 389BP, 390 and 1138SO references. Match this exact designation to the device manual before purchasing.
Highlights
- 82mAh silver-oxide chemistry powers small devices reliably
- 5V output matches original equipment specifications exactly
- Replaces SR54, D389, 389BP, 390, 1138SO for wide compatibility
- Single-cell pack keeps spares minimal and fresh
- New condition guarantees full rated capacity from first use
Specifications
| Brand | ULTRALAST |
|---|---|
| Model | UL389 |
| Type | Batteries |
| Battery Pack | 1-pack |
| Battery Type | 389 Silver Oxide Coin Cell |
| Battery Capacity | 82mAh |
| Battery Voltage | 1.5V |
| Feature | Replaces SR54, D389, 389BP, 390, 1138SO |
| Shipping weight | 0.45 kg |
| Package size | 89 × 51 × 13 mm |
Questions about this item
How long does the 82mAh capacity last under continuous drain?
The 82mAh silver-oxide cell delivers 1.5V until its rated capacity is exhausted; actual runtime depends on the device's current draw.
Does the 1.5V silver-oxide chemistry stay cool during all-day use?
Silver-oxide coin cells generate negligible heat at the low currents typical for watches, calculators and medical devices.
Which devices accept this 389 cell as a direct replacement?
It replaces SR54, D389, 389BP, 390 and 1138SO cells in any device designed for that size and voltage.
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