Rechargeable Battery Pack 12V 20Ah – Extended Runtime for 12V LEDs
Need your LEDs to run longer between charges? This higher-capacity battery pack delivers 60% more runtime than our 12.5Ah version – perfect for full-day events, multi-day installations, or simply reducing how often you need to recharge.
Here's how it works: This battery pack stores 20 amp-hours of power at 12V. Connect your 12V LEDs to the output, and the battery delivers clean, stable power until it needs recharging. Think of amp-hours like a fuel tank – the bigger your LED load, the faster you use the fuel. A small 1-metre strip could run for 50 hours, while a larger installation might run for 8-10 hours.
Why it matters: For market traders, event organisers, and anyone running portable LED displays, battery life is everything. Running out of power mid-event isn't an option. This pack gives you the headroom to run brighter displays, longer hours, or simply the peace of mind that comes with extra capacity.
Key Advantages
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222Wh total energy capacity – 60% more power than our 12.5Ah pack. Run the same LEDs for longer, or power bigger installations for the same duration.
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5A maximum continuous output – Handles up to 60W of 12V LEDs simultaneously. Same output capability as the smaller pack, but with significantly more staying power.
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Built-in BMS protection – Overcharge, over-discharge, short circuit, and overcurrent protection built into every pack. The battery looks after itself.
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Standard DC 5.5x2.1mm connectors – Both male and female connectors included with 20cm leads. Plugs directly into most 12V LED products.
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500+ charge cycles – Maintains at least 70% capacity after 500 full charge/discharge cycles. Years of reliable service with proper care.
Perfect Applications
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Full-day market trading – Power illuminated signage from dawn setup to evening pack-down without worrying about running flat. One charge covers even the longest trading days.
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Multi-day events and festivals – The extra capacity means you can potentially run two shorter days on a single charge, or have plenty of reserve for unexpected extensions.
Also ideal for fairground lighting, portable signage, exhibition displays, outdoor events, and any situation where extended runtime matters more than minimising weight.
Browse our 12V LED strips, LED modules, and LED neon flex or contact our technical team for free consultation: sales@weloveleds.co.uk
⚡ Battery Guide – How Many Do I Need?
Find your total LED wattage in the left column, then read across to see how many batteries you need for your desired runtime.
📐 Quick Formula: Total Watts ÷ 12 = Amps needed. Then: Battery Ah ÷ Amps = Runtime hours
| LED Load |
4-6 hrs |
6-8 hrs |
8-10 hrs |
10+ hrs |
|
12W (1A) |
1× 12.5Ah |
1× 12.5Ah |
1× 12.5Ah |
1× 20Ah |
|
24W (2A) |
1× 12.5Ah |
1× 12.5Ah |
1× 20Ah |
1× 20Ah |
|
36W (3A) |
1× 12.5Ah |
1× 20Ah |
1× 20Ah |
2× 12.5Ah |
|
48W (4A) |
1× 12.5Ah ⚡ |
1× 20Ah ⚡ |
2× 20Ah |
2× 20Ah |
|
60W (5A) |
1× 12.5Ah ⚡ |
2× 12.5Ah |
2× 20Ah |
2× 20Ah |
|
84W (7A) |
2× 12.5Ah ⚡ |
2× 20Ah ⚡ |
2× 20Ah |
3× 20Ah |
|
120W (10A) |
2× 20Ah ⚡ |
3× 20Ah ⚡ |
3× 20Ah |
4× 20Ah |
Key:
12.5Ah battery – best value
20Ah battery – longer runtime
Multiple batteries – split LEDs into sections
⚡ = Over 3A per section – use lever splice connectors instead of DC plugs
⚠️ 5A Maximum Per Battery: Loads over 60W must be split into separate electrical sections. Each section gets its own battery – never connect multiple batteries to the same LED section.
⚠️ Important: Maximum Load & Connections
Maximum continuous output: 5A (60W at 12V)
If your total LED load exceeds 5A, split it across multiple battery packs – one battery per section. Never connect more than 60W of LEDs to a single battery pack.
Example: Need to power 10 metres of ECO 60 strip (48W = 4A)? One battery is fine. Need 15 metres (72W = 6A)? Split into two runs powered by separate batteries.
Golden Rule: Never use more than one power source per LED section. Each strip/flex/module run connects to its own single power source.
Choosing the Right Connections
✅ Loads Under 3A
Use standard DC connectors and extension leads – plug and play with the battery's included connectors.
Browse DC Connectors →
⚡ Loads 3A – 5A
Cut the male DC connector off the battery's output lead and use lever splice connectors to join directly to your LED cables.
View Lever Connectors →
Need a more compact option? See the 12V 12.5Ah Battery Pack – same 5A output, lighter weight, lower cost.
Product Supply Options
Sold as individual battery packs, ready to use. Each pack arrives partially charged (approximately 50% state of charge) for safe shipping and storage.
What You Receive:
- 1x 12V 20Ah Li-ion Battery Pack – Complete with PVC shrink-wrap housing (blue), built-in BMS protection board, and thermal protection
- DC 5.5x2.1mm female connector – 20cm cable length, for connecting to your LEDs
- DC 5.5x2.1mm male connector – 20cm cable length, for connecting to charger
What's Not Included:
- Charger – Required for recharging. Use the compatible 12.6V 3A charger
- DC extension cables – Available separately from our DC connectors collection
- Weatherproof enclosure – Battery is rated IP20 (indoor use). For outdoor applications, house in a suitable weatherproof enclosure
Important: DC Connector Ratings
The battery can output up to 5A, but standard DC extension leads and connectors are typically rated for 1-3A only.
Additional Services:
Technical Support: Not sure if this battery suits your project? Email us your LED specifications and runtime requirements – we'll calculate whether this pack works for you or recommend alternatives. Contact sales@weloveleds.co.uk
What Is a Li-ion Battery Pack?
This is a lithium-ion battery pack – the same rechargeable technology used in laptops, power tools, and electric vehicles. Inside, 24 individual 18650 cells are arranged in a 3S8P configuration (3 in series for voltage, 8 in parallel for capacity). A built-in Battery Management System (BMS) monitors and protects the cells automatically.
In Plain English: This battery stores enough power to run up to 60 watts of 12V LEDs. At low loads, it'll run for over 50 hours. At maximum load, expect around 4 hours. Recharge it with the compatible charger, and it's ready for another 500+ cycles.
Technical Specifications
- Model: KXD-11.1V-20Ah Li-ion Battery Pack
- Nominal Voltage: 12V (11.1V actual)
- Capacity: 20Ah (222Wh)
- Cell Configuration: 3S8P (24x ICR-18650 2500mAh cells)
- Operating Voltage Range: 7.5V – 12.6V
- Maximum Continuous Output: 5A (60W)
- Maximum Continuous Charge Current: 5A
- Standard Charge Voltage: 12.6V CC/CV
- Dimensions: 150mm × 76mm × 56mm (L×W×H)
- Weight: Approximately 1.3kg
- Connector Type: DC 5.5x2.1mm (male and female)
- Operating Temperature (Discharge): -20°C to +60°C
- Charging Temperature: 0°C to +45°C
- IP Rating: IP20 (indoor use only)
- Lifespan: ≥70% capacity after 500 cycles
- Warranty: 1 year
Installation & Compatibility
- Connection: Plug DC female connector into your 12V LED product, DC male connector into charger
- Compatible Systems: Any 12V DC LED product – strips, modules, neon flex, pixel LEDs
- Connector Polarity: DC 5.5x2.1mm barrel connector (centre positive)
- Maximum Load: 5A continuous – for loads over 5A, split across multiple batteries (one per LED section)
Quality Notes
- Cell Quality: Uses branded ICR-18650 cells rated for 500+ cycles with proper care
- For critical applications: Always carry a backup battery or have charging facilities available for events running multiple days
- Storage: Store at 50% charge for periods over 30 days. Recharge every 90 days if storing long-term. Do not charge below 0°C.
