Premium Power for Marine & RV Applications. Bosch Batteries – Engineered for Reliability.
The Bosch DC27 is a premium deep-cycle marine battery designed to deliver reliable, long-lasting power for boats, RVs, and other heavy-duty or deep-discharge applications. Built with maintenance-free calcium technology, this battery provides excellent durability, long service life, and outstanding resistance to vibration and corrosion — ideal for tough New Zealand conditions.
Perfect for trolling motors, onboard electronics, and off-grid systems, the DC27 delivers consistent performance when you need it most. Usually available in-store within 24 hours after purchase.
Features:
- Dual-Purpose Design: Suitable for both starting and deep-cycle discharge applications.
- Maintenance-Free Calcium Technology: No topping-up required — clean, efficient, and reliable.
- High Vibration Resistance: Engineered for the demanding conditions of marine and off-road use.
- Corrosion-Resistant Build: Ensures long-term reliability and stable power output.
- Proven Bosch Quality: Over 100 years of battery innovation — “Invented for Life.”
- Convenient Click & Collect: Usually ready for pick-up within 24 hours from Smart Marine or Century Yuasa locations.
Specifications:
- Product Series: M4
- Technology: Calcium Maintenance-Free Technology
- Warranty: 12 Months
- Nominal Voltage: 12 V
- Capacity (20 HR): 80 Ah
- Reserve Capacity: 145 minutes
- Cold Cranking Amps (CCA): 570 A
- Case Dimensions (L × W × H): 320 × 172 × 203 mm
- Total Height (with Terminal): 230 mm
- Approx. Weight (Gross): 23.7 kg (52.14 lbs)
- Terminals: Marine Dual SAE / Threaded
- Lid Design: Labyrinth Lid
- Application: Marine / RV / Deep Cycle / Dual Purpose
Battery Shipping - All batteries can only be sent to Mainfreight Depots.
Great Barrier Island, Chatham Island or Waiheke Island shipping are also excluded.
Available Pick Up Location:
(Please state in shipping note if choosing click and collect)
- Smart Marine Albany
- Smart Marine Mt.Wellington
- Smart Marine Manukau
- Smart Marine Hamilton
- Smart Marine Tauranga
- Century Yuasa batteries Whangarei
- Century Yuasa Batteries Napier
- Century Yuasa Batteries New Plymouth
- Century Yuasa Batteries Palmerston North
- Century Yuasa Batteries Wellington
- Century Yuasa Batteries Nelson
- Century Yuasa Batteries Christchurch
- Century Yuasa Batteries Dunedin
Smart VIP Price Promise
Our prices are very Smart at Smart Marine! Our Smart VIP Membership and committment to great deals makes sure of that, but if you find a lower price, tell us- we will match it!*

Price Promise Terms & Conditions
- Excludes limited time specials, clearances, non-stocked products, overseas websites, price comparison websites and eBay/TradeMe.
- Applies to identical products, in stock in NZ with pricing valid at time of price match request and purchase, with evidence supplied.
- Excluded Products: clearance, run-out, distress, damaged/soiled, parallel imported, non-stocks, trade quotes, commercial quantities, credit account holders, insurance claims, services, typos, overseas websites, price comparison websites, auction websites.
- Free product, offers, sales and promotions cannot be redeemed with price matches.
- The price match applies to the total cost to buy including shipping, taxes and fees.
- Approved Price Promise Matches and purchases can only be redeemed with our store crew. Please contact your closest store with stock.
- Short term finance may not be available with some price matched purchases. Please enquire.