Pelican 3315RZ1 Replacement Battery 3.7V 3400mAh

Pelican 3315RZ1 — 3.7V Li-ion Replacement Battery (03315R-3020-000E)

This is a 3.7V, 3400mAh Li-ion replacement battery for the Pelican 3315RZ1 and 3315RZ1-RA rechargeable flashlights. The 3315RZ1 is a compact tactical flashlight used by law enforcement, military, and outdoor professionals. It draws current directly from this single 18650-format cell to drive its high-intensity LED output.

• 3315RZ1 and 3315RZ1-RA fit: Both models share the same battery bay, voltage rail, and OEM part number — the RA variant is a regional accessory package, not a different electrical platform. One cell fits both.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the 3315RZ1 driver. The BMS accepted charge from the Pelican cradle charger without error, held voltage through high-output draw, and triggered low-voltage cutoff cleanly before cell damage could occur.
• Turbo mode current draw: The 3315RZ1's turbo setting pulls significantly more current than standard or low modes. Keep the cell contacts and battery bay clean — debris on the contacts increases resistance and causes the driver to step down output even on a full charge.

Flashlight driver stepping down output before the battery reads low

The 3315RZ1 driver monitors cell voltage continuously and reduces output when voltage drops under load — even if the indicator hasn't flagged low battery yet. Under high-current draw in turbo mode, a cell with reduced capacity can sag below the driver's brownout threshold faster than the indicator tracks. This isn't a fault in the driver — it's protecting the cell from deep discharge damage. If dimming happens early, check resting voltage after a full charge; a healthy cell should sit at or above 4.1V off the charger.

Battery draining significantly faster in turbo mode than standard mode

Turbo mode on the 3315RZ1 draws five to ten times more current than standard mode from the same 3400mAh cell. That disproportionate draw is normal — higher output always trades charge capacity for intensity. What isn't normal is turbo output collapsing to a lower mode almost immediately after switching. If that happens, the cell voltage is sagging under the high-current load, which points to a degraded or deeply discharged cell. Fully charge the replacement, switch to turbo, and confirm sustained output holds stable before returning the light to service.