SeaLife XTAR 3500 mAh 18650 Li-Ion Battery
SeaLife XTAR 3500 mAh 18650 Li-Ion Battery is backordered and will ship as soon as it is back in stock.
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Product Information
The SeaLife XTAR 3500 mAh 18650 Li-Ion Battery (SKU SL9828) is a rechargeable 3.6V lithium-ion battery built around a Panasonic-Sanyo NCR18650GA cell, delivering a true 3500mAh capacity and a maximum discharge current of 4.87A.
Who it is for
This battery is designed for divers and underwater photographers who own a SeaLife Sea Dragon Mini 600, 650, 900, 1000, 1300 or Mini Fluoro dive light, giving them a rechargeable power source sized to fit those lights. SeaLife also states the battery works with other light brands.
Key details
- Capacity: 3500mAh at 3.6V nominal voltage
- Maximum discharge current: 4.87A
- Cell type: Panasonic-Sanyo NCR18650GA
- Weight: 47g
- Dimensions: 18.5mm x 68.5mm
- Built-in overcharge/discharge protection and short-circuit protection circuitry
Compatibility and sizing
The SL9828 is compatible with the Sea Dragon Mini 600, Mini 650, Mini 900, Mini 1000, Mini 1300 and Mini Fluoro dive lights. SeaLife notes it can also be used with other light brands.
DiveCatalog.com is an authorized SeaLife dealer and a dive shop based in Irvine, California, serving divers since 2003. Call or chat with us at 888-701-4017 if you have questions about fit or compatibility with your specific dive light.
- Capacity: 3500mAh true capacity, described by the manufacturer as the highest industry capacity.
- Voltage and discharge: 3.6V nominal voltage with a maximum discharge current of 4.87A.
- Overcharge protection: Built-in overcharge/discharge protection circuit designed for long battery life.
- Short-circuit protection: Integrated short-circuit protection circuitry to help ensure safety.
- Cell construction: Built using a Panasonic-Sanyo NCR18650GA cell.
- Weight: 47g net weight.
- Size: 18.5mm x 68.5mm dimensions, the standard 18650 format.
- Light compatibility: Designed for the Sea Dragon Mini 600, 650, 900, 1000, 1300 and Mini Fluoro dive lights, and stated to work with other light brands.
| SKU | SL9828 |
| Capacity | 3500mAh |
| Voltage | 3.6V |
| Maximum discharge current | 4.87A |
| Cell type | Panasonic-Sanyo NCR18650GA |
| Weight | 47g |
| Dimensions | 18.5mm x 68.5mm |
| Compatible lights | Sea Dragon Mini 600, 650, 900, 1000, 1300, Mini Fluoro |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Will the SeaLife XTAR 3500 mAh 18650 battery work with lights from other brands?
SeaLife states the SL9828 is designed for its Sea Dragon Mini 600, 650, 900, 1000, 1300 and Mini Fluoro lights, and also notes it works with other light brands.
What size and weight is the SeaLife XTAR 18650 battery?
The battery measures 18.5mm x 68.5mm, the standard 18650 cylindrical cell size, and weighs 47g. It is built around a Panasonic-Sanyo NCR18650GA cell rated at 3.6V with a 3500mAh capacity.
Does this battery have built-in safety protection?
Yes. The SL9828 includes a built-in overcharge/discharge protection circuit intended for long battery life, along with short-circuit protection circuitry to help ensure safety during use and charging.













