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MK 8G34-DEKA 12V Gel Battery


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The Deka Solar Valve-Regulated Gel Monobloc series offers reliable, versatile, maintenance-free power. The thixotropic gel enables these batteries to be completely spillproof providing many available options for installation. The gelled electrolyte gives more protection to the battery plates, and is better suited for deep cycle discharge. With longer discharge and less charging time, these batteries are ideal for many renewable energy applications.



  • Valve-regulated
  • Gelled electrolyte
  • Compu-cast, power path grids and computer-controlled oxide
  • Low stand loss
  • Tank formed plates
  • Rated non-spillable by ICAO, IATA and DOT
  • Made in the USA


  • Sealed construction eliminates periodic watering, corrosive acid fumes and spills.
  • Electrolyte will not stratify. No equalization charging required.
  • Increases durability and deep cycle ability for heavy demand applications.
  • Less than 2% per month stand loss means little deterioration during transport and storage.
  • Ensure voltage matching between cells.
  • Transports easily and safely by air. No special containers needed.
  • Ensures reliable service, support and quality.
Voltage 12 volts nominal (8GGC2/8GTE35 are 6 volts)
Plate alloy Lead calcium
Container/cover Polypropylene
Electrolyte Sulfuric acid thixotropic gel
Valve Self sealing
Photovoltaic Charging Parameters
Bulk Charge Max Current (amps) 30% of 20 Hr Rate
Absorption (Regulation) Charge Constant Voltage 2.35 - 2.43 vpc
Float Charge Constant Voltage 2.25 vpc + 1
Equalize Charge Constant Voltage 2.30 - 2.43 vpc
Temperature Coefficient 0.003 v / °C

Batteries require a custom freight quote. After your order is placed, we will contact you with shipping rates and will complete your order upon your approval.

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. To see an estimate of our delivery times, click here.

Returns & Replacements
Products can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns are paid for by customer unless product is defective or damaged, in which case Real Goods assumes responsibility. Please use Fedex, UPS, or USPS with tracking, for returns.

Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 20%. Freight shipping is non-refundable.

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