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Product Information
The BigBlue Battery Charger 18650 x 4 Supreme (SKU BATCHR18650X4SUPREME) is a dedicated charger for the 18650x4 Supreme battery pack used in BigBlue's TL3800P Supreme dive light. It charges up to four 18650 batteries at once and uses a two-color LED indicator to show charging status.
Who it is for
This charger is for divers who own a BigBlue TL3800P Supreme dive light and need a way to recharge the light's 18650x4 Supreme battery pack between dives.
Key details
- Charges up to four 18650 batteries simultaneously
- LED indicator glows red while charging and turns green when the batteries are fully charged
- Designed for the 18650x4 Supreme battery pack (BATCELL18650X4SUPREME)
- Compatible with the BigBlue TL3800P Supreme dive light
- Package weight: 1 lbs
Compatibility and sizing
This charger is built for the 18650x4 Supreme battery pack and the BigBlue TL3800P Supreme dive light.
DiveCatalog.com is an authorized BigBlue dealer and a dive shop in Irvine, California, operating since 2003. Call or chat with us at 888-701-4017 if you have questions about battery pack or light compatibility before you order.
- Simultaneous charging: Charges up to four 18650 batteries at once.
- Red charging indicator: LED glows red while the batteries are charging.
- Green full-charge indicator: LED turns green once the batteries are fully charged.
- Battery pack match: Built for the 18650x4 Supreme battery pack (BATCELL18650X4SUPREME).
- Light compatibility: Designed for use with the BigBlue TL3800P Supreme dive light.
- Lightweight package: Package weight of 1 lbs.
| Brand | BigBlue |
| Model | Battery Charger 18650 x 4 Supreme |
| SKU | BATCHR18650X4SUPREME |
| Barcode | 4897025435926 |
| Compatible Light | TL3800P Supreme |
| Compatible Battery Pack | 18650x4 Supreme (BATCELL18650X4SUPREME) |
| Charging Capacity | Up to 4 x 18650 batteries simultaneously |
| LED Indicator | Red while charging, green when fully charged |
| Package Weight | 1 lbs |
⚠️ 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
What dive light is the BigBlue Battery Charger 18650 x 4 Supreme compatible with?
This charger is built for the BigBlue TL3800P Supreme dive light and its 18650x4 Supreme battery pack (BATCELL18650X4SUPREME). Manufacturer documentation lists this pairing specifically, so confirm your light model before ordering if you are unsure which battery pack it uses.
How many batteries can this charger charge at the same time?
It can charge up to four 18650 batteries simultaneously. A built-in LED indicator shows red while the batteries are charging and switches to green once they reach a full charge.
How do I know when the batteries are done charging?
The charger has an LED indicator that glows red during charging. When the batteries are fully charged, the LED turns green, letting you know they are ready to use in your TL3800P Supreme battery pack.
How much does the BigBlue Battery Charger 18650 x 4 Supreme weigh?
The charger has a package weight of 1 lbs, making it easy to pack along with your BigBlue TL3800P Supreme dive light and spare battery packs for travel.












