Megaware BatteryGuard™ sits under your battery and absorbs the gravity shock caused by excessive vibration and up and down bounce.


Prolong the Life of Your Battery

Save Money by Protecting Your Battery Investment


Megaware Engineering

Megaware BatteryGuard acts like a shock absorber and can help extend the life of your expensive battery. Excessive shock and vibration are two of the leading causes of battery failure. Megaware BatteryGuard sits under your battery and absorbs the G-Shock caused by excessive shock and vibration. Protect your battery from premature failure, and prevent damage from road impacts, rough water, and mechanical vibration.

The Megaware BatteryGuard protects many types of batteries including Deep-cycle, Lead Acid, AGM, and Lithium-Ion. Great for boats, RVs, semi trucks, heavy equipment, and off-road vehicles.

Save money and get the most performance from your batteries by protecting them with the Megaware BatteryGuard.

Battery G Shock Performance Comparison

Scientific explanation: When a battery is subjected to extreme vibration and shock, cracks occur at the interface of mechanical joints inside the battery and its cells. While some batteries are designed to withstand these forces better than others, all batteries can be damaged by shock and vibration over time. 

Battery failure will often be preceded by performance fading. This is because the stress of shock and vibration causes micro fractures inside the battery which reduce internal conductivity and cause a battery to have low voltage. Over time, as the micro fractures continue to propagate in the battery’s conductive components, internal resistances increase. This condition reduces the flow of amps which are required to power electrical components. 

Another cause of performance fading is the physical collision of battery plates as a result of shock and vibration. This condition causes a short in a cell or cells. This also, may cause a battery to have low voltage and insufficient power.

Note: Clamping the battery too tightly in place and compressing the pad may decrease the pad’s effectiveness.

Caution: This product may excrete oil and stain certain surfaces and is recommended for placement in battery trays or boxes only.


  • Reduces up to 80% of the G-Shock Caused by Excessive Shock and Vibration
  • Great for Boats, RVs,  Semi Trucks, Heavy Equipment, and Off-Road Vehicles.
  • Dimensions: 12¾” × 6⅞” × ⅜”
  • Place in a Battery Box or Tray
  • Fits up to Group 31 Batteries
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