The following product safety recall was voluntarily conducted by the firm in cooperation with the CPSC. Consumers should stop using the product immediately unless otherwise instructed.Name of Product: NIMH AA Rechargeable BatteriesUnits: About 41,000Distributor: Frontrow, of Petaluma, Calif.Manufacturer: Gold Peak Industries, of San Diego, Calif. Hazard: The batteries can rapidly overheat, posing a burn hazard to the user.Incidents/Injuries: The firm has received four reports of batteries overheating during use in wireless public announcement systems and microphones. No injuries have been reported.Description: The recalled 2400-mAH NIMH batteries are used in the 930TM, 930HT and 940TM public announcement system microphones. Only batteries with part number 374-30-400-00, printed on the light green sleeve of the battery, are included in the recall.Sold by: Frontrow distributors nationwide from June 2005 through December 2008 for about $7 for the battery only and about $300 when sold with the transmitter.Manufactured in: ChinaRemedy: Consumers should immediately stop using the recalled batteries and contact their FrontRow agent to receive free replacement batteries. Alkaline batteries can be used while waiting for replacement batteries. All known purchasers have been contacted about the recall.