12V 21Ah Lithium Battery Pack – Built with Brand New LG M29 18650 Cells – Includes Charger

This high-performance 12V rechargeable lithium battery pack is built with genuine brand new LG M29 18650 cells, offering excellent capacity, long cycle life, and reliable power output. Designed in a 3S7P configuration (21 cells total), it’s ideal for fish finders, bait boats, solar storage, LED lighting, camping, RC, and DIY energy projects.

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⚡ Specifications:

Cell Type: Brand New LG M29 18650 Li-ion

Configuration: 3S7P (21 cells total)

Nominal Voltage: 11.1V (fully charged 12.6V)

Capacity: 21000mAh (21Ah)

Continuous Discharge Current: Up to 40A (with BMS)

Cycle Life: 800+ cycles (with proper use)

BMS (Battery Management System): 3S protection – overcharge, over-discharge, short-circuit, and balancing

Case Size: Standard 12V ABS case (approx. 150 x 65 x 94 mm)

Output Terminals: Alligator clips (red + black)

Color: Black

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✅ Features:

Built from authentic brand new LG M29 lithium-ion cells

3S 40A BMS ensures safe and stable performance

Includes 12.6V 2A Li-ion charger for easy recharging

Lightweight and compact alternative to bulky lead-acid batteries

Perfect for Fishfinders, bait boats, solar power, camping, LED lighting, RC hobbies, and portable electronics

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📦 Package Includes:

1x 12V 21Ah Li-ion Battery Pack (LG M29 cells)

1x 12.6V 2A Li-ion Charger with alligator clips

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⚡ Reliable power for your fishing trips, camping, and DIY projects – ready to use out of the box!

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⚡ Ready to use – safe, reliable, and compact power for your projects!

⚠️ WARNING – LITHIUM-ION BATTERY SAFETY

This product contains a Lithium-Ion battery. Improper use may result in fire, explosion, personal injury, or property damage.

Safety Instructions:

Use only the recommended and approved charger for this battery.

Do not overcharge or exceed the specified electrical limits.

Do not short-circuit the battery terminals.

Do not crush, puncture, open, modify, or disassemble the battery.

Do not expose the battery to fire, water, moisture, or extreme temperatures (above 60°C / 140°F or below −20°C / −4°F).

Do not use the battery if it is swollen, damaged, leaking, or emitting an unusual smell.

Charge the battery under supervision only and on a non-flammable surface.

Keep the battery out of reach of children and pets.

If overheating, smoke, or unusual odor occurs, stop using immediately and move the battery to a safe, non-flammable area.

Storage and Transport:

Transport the battery in suitable protective packaging.

Do not store the battery fully charged or fully discharged for long periods.

Recommended storage temperature: 10°C – 25°C (50°F – 77°F).

Disposal:

Do not dispose of the battery with household waste.

Dispose of the battery at an authorized battery recycling facility.