Looking for dependable motorhome batteries or RV batteries in NZ? Whether you're replacing a worn-out house battery or upgrading for extended off-grid travel, we stock high-quality camper batteries, deep cycle AGM, and lithium options designed for New Zealand road conditions.
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1. AGM vs. Lithium: The Quick Guide for Kiwi Campers
When setting up your caravan, campervan, or 4WD, choosing the right battery chemistry is everything. Here is the honest breakdown to help you choose between traditional heavy-duty AGM and modern Lithium (LiFePO4).
- AGM (Absorbent Glass Mat):
- The Lowdown: Reliable, completely sealed, and budget-friendly upfront.
- The Reality: You can safely drain them to 50% capacity. If you buy a 100Ah AGM battery, you have 50Ah of usable power before you need to recharge.
- Best For: Campers who only head out a few times a year, weekend trips, or those wanting a proven setup without high initial costs.
- Lithium (LiFePO4):
- The Lowdown: Ultra-lightweight, lightning-fast charging, and holds stable voltage.
- The Reality: You can safely drain them down to 80% to 90% capacity. A 100Ah Lithium battery gives you nearly 90Ah of usable power—almost double the AGM—and weighs up to 60% less.
- Best For: Full-time travelers, off-grid freedom camping, and setups where keeping weight under GVM is critical.
DO YOU WANT TO COMPARE ALL COMMON DEEP CYCLE CHEMISTRIES? CLICK [HERE]
2. Buying Guide: How to Choose Your Amp-Hour (Ah) Capacity
Don't guess your power needs and end up stuck in the dark. Battery capacity is measured in Amp-Hours (Ah). Think of Ah like the size of your fuel tank. Follow these three steps to find your size:
- List Your Gear: Write down everything you run on 12V (e.g., Fridge, LED lights, water pump, phone chargers).
- Calculate Daily Amps: Multiply the item's current draw (Amps) by the hours it runs per day.
- Example: A portable fridge drawing 2 Amps running for 24 hours uses 48Ah per day.
- Example: LED lights drawing 1 Amp running for 4 hours use 4Ah per day.
- Total Daily Power Needed = 52Ah.
- Apply the Safety Buffer:
- If buying Lithium, you need a battery close to your daily total (e.g., a 60Ah to 100Ah battery).
- If buying AGM, you must double your daily total so you don't drop below the 50% limit (e.g., a 100Ah to 120Ah battery).
3. Care & Maintenance: Maximize Your Battery Lifespan
Our philosophy is simple: "The longer you get out of our batteries, the happier we are and the happier you are." Use our trade secrets to stop your deep cycle battery from dying early:
- Never Store It Flat: Leaving a battery discharged causes sulfation (hard crystals building up on the lead plates). Always recharge it immediately after a trip.
- Use the Correct Charger: AGM and Lithium require entirely different charging profiles. Using an old automotive charger will cook your deep cycle cells. Use a smart charger with a dedicated AGM or Lithium mode.
- Avoid the "Death Zone" Discharge: Don't drain your AGM past 50%. If your appliances start cutting out due to low voltage, shut them down immediately and connect to solar or mains power.
- Keep It Cool and Clean: Heat kills batteries. Ensure your battery box is well-ventilated, away from direct engine heat, and keep terminals clean to prevent power leakage.
