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12v 120ah Deep Cycle Battery
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Explore 12V 120Ah deep cycle batteries for marine, RV, and solar applications. Find AGM and lithium options built for reliable power and durability.
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MR137-120 12V, 120Ah, Deep Cycle Group 31 AGM Battery
VMAXTANKS
https://www.vmaxtanks.com › Marine Batteries
VMAXTANKS
https://www.vmaxtanks.com › Marine Batteries
Maximize runtime with the VMAX MR137-120. A premium 12V 120Ah Group 31 Deep Cycle AGM battery engineered for Trolling Motors, RVs, and any heavy continuous ...
$279.96Free delivery30-day returns
KickAss 12V 120AH Deep Cycle AGM Battery
KickAss Products USA
https://kickassproducts.com › products › kickass-12v-1...
KickAss Products USA
https://kickassproducts.com › products › kickass-12v-1...
Perfect for camping, RVs, off-roading, and dual battery systems, this 12V deep cycle battery is a versatile power solution. It can be charged via solar ...Read more
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12V 120Ah (1.54kWh) Pro Series - LiFePO4 Cranking & ...
Epoch Batteries
https://www.epochbatteries.com › products › 12v-120a...
Epoch Batteries
https://www.epochbatteries.com › products › 12v-120a...
LiFePO4 Chemistry; Cranking Starter Battery ~ 1100 CCA ~ Compatible with all outboard motors up to 250hp; Cranking Battery - 800A @ 10s (SOC>60%), ...Read more
$799.00Out of stock
12V 120Ah LiFePO4 Car Start-Stop Lithium Battery ... - eBay
eBay
https://www.ebay.com › ... › Solar Cells & Kits
eBay
https://www.ebay.com › ... › Solar Cells & Kits
We sell Ingeosolly brand Lithium Iron Phosphate (LiFePO4) batteries, which is low temperature resistant, environmentally friendly, lighter than lead-acid ...Read more
12V 120Ah Deep Cycle + Starting Battery
Solid State Marine
https://solidstatemarine.com › products › 12v-120ah-de...
Solid State Marine
https://solidstatemarine.com › products › 12v-120ah-de...
This versatile battery is the perfect replacement for AGM or LFP batteries, suitable for deep cycle application with a high continuous discharge rate of 120AÂ ...Read more
$1,625.00 to $2,004.00In stock$29.88 delivery30-day returns
People also ask
How long will a 120 Ah battery last?
A 120Ah leisure battery powers phones and LED lights for 4-5 days without recharge. When powering a fridge, it lasts 1-2 days. To extend the life of your battery, keep its charge above 50% and store in a cool place. Factors like temperature, discharge rate, recharging habits affect its longevity.Apr 1, 2025
How Long Does A 120ah Leisure Battery Last?
Snappy Start Batteries
https://snappystartbatteries.co.uk › blog › how-long-does...
Snappy Start Batteries
https://snappystartbatteries.co.uk › blog › how-long-does...
Does the Ah on a car battery matter?
Your automobile will have greater power while the ignition is off if the battery has a higher Ah rating because it can store more electrical energy. Let's look at why this matters: A higher Ah is essential for vehicles with numerous electrical systems, such as heated seats and an infotainment system.Sep 24, 2025
Car Battery Ah & CCA: Importance & Selection
Dial A Battery
https://dial-a-battery.com › useful-tips › understanding-c...
Dial A Battery
https://dial-a-battery.com › useful-tips › understanding-c...
How long does a 12V 12 Ah battery last?
A 12V 12Ah battery's runtime depends heavily on the device's power draw (watts/amps) and battery type (lead-acid vs. lithium), but for a 12W device, a lead-acid might last around 10-12 hours (using ~50% capacity), while a lithium battery could last longer, providing roughly 12 hours of power (using nearly 100% capacity) before needing recharge; factors like temperature, age, and discharge depth drastically affect real-world duration.
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Calculating Runtime (Basic Formula)
- Calculate Watt-Hours (Wh):Voltage (V) x Amp-Hours (Ah) = Watt-Hours (Wh)
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What is the downside of AGM batteries?
AGM battery downsides include a higher initial cost, sensitivity to overcharging (requiring specific chargers), potential damage from extreme heat or partial charging, slower charging speeds than lithium, and being heavier than lithium alternatives, making them unsuitable for some deep-cycle applications without specific management.
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Key Drawbacks
- Cost: Significantly more expensive upfront than traditional flooded batteries.
- Overcharging Sensitivity: Can be permanently damaged by excessive voltage from faulty alternators or standard chargers, as the electrolyte dries out.Â
- Charging Requirements: Need precise charging profiles and specialized chargers to avoid undercharging or overcharging, and ideally require a full charge between uses.Â
- Heat Sensitivity: High temperatures can shorten their lifespan more than other battery types.Â
- Deep Cycle Limitations: While better than flooded, not all AGMs are true deep-cycle; they can suffer reduced capacity if frequently discharged deeply.Â
- Weight: Heavier than lithium-ion batteries for the same power output.Â
Usage Examples of Downsides
- Budget Vehicles: May not be cost-effective for basic cars without start-stop systems where performance benefits don't justify the price.
- Infrequent Use Applications: If a full recharge between uses is difficult (like some marine or RV setups), performance can suffer.Â
- Basic Chargers: Using an old, standard charger can damage an AGM, requiring an upgrade.Â
- Hot Climates: Poor ventilation in hot environments reduces battery life.Â
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Big Dog Battery 12V 120AH DC (I)
Tri-State Battery Supply
https://toughbatteries.com › products › big-dog-battery-1...
Tri-State Battery Supply
https://toughbatteries.com › products › big-dog-battery-1...
Features: Thick Plates And High-density Active Material Superior Deep Cycle Design High Power Density Longer Life In Deep Cycle ApplicationsRead more
$243.80In stock$121.50 delivery30-day returns
CLUB CAR BATTERY, 12V 120AH - Part: 47668547001
uSource Parts
https://usource.parts › club-car-battery-12v-120ah-part-...
uSource Parts
https://usource.parts › club-car-battery-12v-120ah-part-...
CLUB CAR BATTERY, 12V 120AH - Part: 47668547001. Be the first to review this product. $807.68. Availability: In stock. SKU. 47668547001. Qty: Add to Cart.Read more
N120 Battery - 12V 120Ah High Performance Lead Acid
Alibaba.com
https://www.alibaba.com › ... › Lead Acid Batteries
Alibaba.com
https://www.alibaba.com › ... › Lead Acid Batteries
Discover high-quality 12V 120Ah lead acid car batteries at Alibaba.com. Rechargeable, durable, and suitable for automotive, marine, and electric vehicles.
12V 120AH MF Automotive Car Start Battery
Future Green Technology Co., Ltd.
https://www.futuregreenbattery.com › 12v-120ah-mf-aut...
Future Green Technology Co., Ltd.
https://www.futuregreenbattery.com › 12v-120ah-mf-aut...
12V 120AH MF Automotive Car Start Battery ; Model, FGET 12V120AH-D ; Nominal Voltage, 12V ; Norminal Capacity, 120AH ; Demension, 509*185*196*217mm ; Unit Weight ...Read more