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Product Description

  • Description
  • Warranty


As a silver oxide battery, the Maxell 399 SR927W is perfectly suited for any task. With low self-discharge, stable output voltage, and the ability to work with high current demands, the Maxell 399 is a reliable battery in any state.


As a coin cell battery, the Maxell 399 is perfect for keyless remote entry systems for cars and homes, watches, calculators, digital thermometers, glucometers, heart-rate monitors, and small electronic toys.

Not to mention that the Maxell 399 is operable in temperatures ranging from hot to cold and has a shelf life of 5 years.

  • Brand / Type: Maxell
  • Model: 399 SR927W
  • Chemistry: Silver Oxide
  • Output Voltage: 1.55V
  • Height: 2.73mm
  • Weight: 0.375lbs
  • Diameter: 9.5mm
  • Capacity: 57-60 mAh
Equivalent Battery Types:
CR927, Energizer / Eveready 399, Rayovac 399, Renata 399, 35, Varta V399, V543, Seiko SB-BP, Citizen 280-44, Timex W, New Tec SR927PW, Duracell D399, Bulova 613, GP GP399, IEC SR57, SR927, SR927SW, SR 927, SR927W


You are protected by our 30 Day Money Back Guarantee and Specific Warranty Options: Tera Pump Fuel & Liquid Pumps: 1 Year Warranty. BRS Super Battery: 2 or 10 Year Warranty. BRS Super Battery Lithium: 3 Year Warranty. Power Wheels Batteries and Chargers: 6 Month Warranty. Please contact us for all other product specific warranty options.

I have been using this pump all summer to keep my boat, lawn tractor and a whole bunch of other stuff filled up around here. I still use 5 gallon containers for their portability and even with 10 of those I'll have to fill them twice to get through the summer. This pump has been great for my needs. If you are sick and tired of having to hold a 5 gallon container of fuel in the air while attempting to get those funky nozzles to work, buy this pump.


I have two of these and found them really useful. No more spillled gas and pumps fast!

K. Fairfield

So far it’s working as well as I had hoped. Nothing is perfect when trying to transfer gas, but this does a very decent job. You need to make sure to lift the nozzle and hose up at the end of the fuel transfer to allow any residual fuel to run back into the tank or it will dribble out all over. It empties most of a five gallon gas can in a couple minutes without having to lift and hold the can up which is exactly what I wanted.

V. Thomas