Product ID:
Subject: Ms
Content: Purchased 2 dive lamps around the same time last year. The PFSN 3000 still workd the PFSN professioner refuses to turn on. Battery is charged. Please advise. Too short of life span.

Product ID:
Subject: Light can't stay on if you tighten battery
Content: Light won't stay on if you tighten the battery. Only stays on with the end turned a few times.

Product ID:
Subject: Shenzhen professioner technology Co., Ltd
Content: My flashlight is not on

Product ID:
Subject: Mr.
Content: I purchased a PFSN Dive Light Diving Flashlight - High Lumens Underwater Flashlight for Diving, 400m Beam Distance, 20Hrs Long Last, Rechargeable Scuba Flashlight Best for Scuba Diving, Caving, Spearfishing, on Amazon in September of 2025. Used it twice and it no longer turns on. Battery is fully charged, contacts are clean, light has not been flooded. It just stopped working.

Product ID:
Subject: mr
Content: My light quit working soon after I purchased it in September. Just getting back to it. I tried the power button for 5+ seconds and it doesn't turn on. The battery measure 4.2V. Is there something to the lockout I am missing?

Product ID:
Subject: Miss
Content: I won pfsn backup battery and hf80 standard flash lighy

Product ID:
Subject: Miss
Content: I won pfsn backup battery and hf80 standard flash lighy

Product ID:
Subject: Miss
Content: I won pfsn backup battery and hf80 standard flash lighy

Product ID:
Subject: DF30PRO-B 3 stops working below 20 feet
Content: DF30PRO-B 3 stops working below 20 feet

Product ID:
Subject: DF30PRO-B 3 stops working below 20 feet
Content: DF30PRO-B 3 stops working below 20 feet