(WASHINGTON) — In October 2020, Sector Los Angeles-Long Beach found 11 noncompliant See-Me 1.0 LED PFD lights. The bottoms of the lights were missing, cracked or bulging. The lights are manufactured by AOB Outdoor Products & Accessories Inc. and may be labeled as Model 51150 or strobe Model 51152. These models use two customer-supplied AAA alkaline or lithium batteries; the affected lights all used alkaline batteries.
Causal analysis determined the following: The insulating seals at the end of the battery breached, allowing potassium hydroxide to escape and react with air in the device causing potassium carbonate to form. The leaks occurred due to either self-discharge, in which the stored charge was reduced due to an internal chemical reaction within the affected batteries, or the affected batteries surpassed the manufacturer’s recommended storage life and/or storage conditions. No other failures of these models have been reported.
AOB recommends the use of Energizer Ultimate lithium batteries, which are considerably more leakproof than alkaline batteries, outperform alkaline in extreme temperature conditions (-40 degrees to 140 degrees) and have a longer shelf life than alkaline batteries. Prior to storing the See-Me 1.0 PFD light, users should remove depleted batteries and replace with new batteries to avoid degradation in storage due to a variety of chemical mechanisms.
The U.S. Coast Guard recommends that users of any PFD lights store them where they will not be exposed to extreme temperatures or salt water and that manufacturer-recommended batteries are used for optimal life of the equipment.
This safety alert was developed by the Coast Guard Office of Design and Engineering Standards and the Office of Investigations and Casualty Analysis. Any questions or comments regarding this equipment should be sent to sent to: HQS-pf-fldr-CG-INV@uscg.mil.
– U.S. Coast Guard