Top 10 3.2 V Solar Battery Guide And Review

By Henry, Updated on September 13, 2024

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When powering solar energy systems, picking the correct battery can make or break your setup. Hence, choosing a battery specifically designed to work in renewable energy systems like solar panels is best. With its stable performance, the 3.2V battery has become a go-to for anyone looking to store solar energy efficiently.

Let’s learn more about 3.2 V about solar batteries!

Part 1. What are 3.2V solar batteries?

3.2V solar batteries are typically Lithium Iron Phosphate (LiFePO4), which is known for its long-lasting performance and excellent safety profile.

How do they differ from other battery types? They stand out due to their unique voltage range and ability to maintain stable output for solar-powered systems.

What is the role of 3.2V batteries in solar energy systems? 3.2V batteries can better handle the fluctuations in energy production that come with solar power.

Part 2. Top 10 3.2V solar batteries: in-depth reviews

1. Ufine 3.2 V 295Ah Prismatic LFP Battery

Specifications:

Configuration: 1S1P (Single Series, Single Parallel)
Weight: Approx. 5523g
Capacity: 295Ah
Voltage: 3.2V
Energy: 944Wh

Pros:

295Ah ensures long usage periods.
Operates in various environmental conditions.
Supports quick charge cycles.
Up to 2000 cycles with minimal degradation.
Safe and sustainable chemistry.

Cons:

Relatively heavy at approximately 5523g.
Specific to certain applications and setups.

Ideal Applications:

Tablets
Emergency lighting
Home energy storage
Power tools
Wheelchairs

2. Bailoda Rechargeable Batteries GTF 3.2V

Specifications:

Voltage: 3.2V
Capacity: 15Ah (15000mAh)
Composition: LiFePO4
Unit Count: 6 pieces
Compact, rechargeable design

Pros:

Long battery life, even with low discharge
High energy density for consistent performance
Lightweight and portable for easy transport
Reliable protection against leakage and damage
Rechargeable with an extended working life

Cons:

It may require a compatible charger
Higher upfront cost compared to non-rechargeable options

Ideal Applications:

electric bicycles
electric scooters
solar lights
e-bikes

3. Taken 3.2V 450mAh LiFePO4 Rechargeable Battery

Specifications:

Voltage: 3.2V
Capacity: 450mAh
Battery type: LiFePO4
Cycle life: Over 1200 charges
Size: 4/5AA, shorter than standard AA batteries

Pros:

High cycle life with over 1200 recharges
An environmentally friendly alternative to disposable batteries
Compact size for specific devices
Works with a wide range of electronics
Reliable performance for solar and home devices

Cons:

Not compatible with standard AA battery replacements
Lower capacity than larger LiFePO4 batteries

Ideal Applications:

solar garden lights
digital cameras
home security systems
electric toothbrushes
mobile mouse or keyboard

4. Multinn 3.2V Deep Cycle DIY Lithium Iron Phosphate Battery

Specifications:

Voltage: 3.2V
Capacity: 100Ah
Lifespan: 2000 to 8000 charge cycles
Battery type: LiFePO4
Amperage: 100A

Pros:

Long lifespan, up to 15 years
Matched and balanced cells for reliable performance
Suitable for heavy-duty applications
High capacity for extended energy storage
Excellent durability under frequent charging

Cons:

It may require advanced solar controllers
Higher initial cost

Ideal Applications:

rv
solar energy systems
electric cars
scooters
power tools

5. Power Portable 3.2 Volt 32650 LiFePO4 Battery

Specifications:

Voltage: 3.2V
Capacity: 5000mAh
Chemistry: Lithium Phosphate (LiFePO4)
Max discharge current: 15A
Dimensions: 67 mm length, 32 mm diameter

Pros:

High energy density for longer run times
No memory effect, extending battery life
Lightweight and compact for easy use
Supports up to 2000 charge cycles
Excellent for high-discharge devices

Cons:

Sold as a single unit
It may require specific charging equipment

Ideal Applications:

rc racing cars
airsoft guns
RC robots
custom battery packs
e-bikes

6. RUJUE 3.2V LiFePo4 Rechargeable Battery

Specifications:

Voltage: 3.2V
Capacity: 500mAh
Battery type: Lithium Phosphate (LiFePO4)
Dimensions: 14 x 43 mm
Cycle life: 1000 cycles (2-3 years of usage)

Pros:

Environmentally friendly; ideal for solar lights
Long-lasting, with up to 1000 charge cycles
Reliable for outdoor applications
Safe, tested under strict quality standards
Lightweight and compact design

Cons:

It may not be compatible with all devices
Requires specific size (14430), which differs from AA

Ideal Applications:

Solar panel outdoor garden lights
Toothbrushes and shavers
Flashlights

7. Henreepow 3.2V Battery

Specifications:

Voltage: 3.2V
Capacity: 1000mAh
Battery type: Lithium Phosphate (LiFePO4)
Size: 18500 (2 inches x 0.7 inches)
Rechargeable up to 1500 cycles

Pros:

Ideal for solar lights and outdoor use
Long-lasting with low self-discharge
Environmentally friendly, no harmful metals
Safe to use, with reliable performance
Pre-charged to 30% for transport safety

Cons:

Needs full charge before initial use
It may not be compatible with devices needing other battery sizes

Ideal Applications:

Outdoor garden solar lights
Landscape and security lighting
Flashlights and other AA battery-compatible devices

8. Tyrone 3.2V Rechargeable Solar Battery

Specifications:

Voltage: 3.2V
Capacity: 450mAh
Battery type: LiFePO4
Size: 14430 (Shorter than AA)
Rechargeable up to 1500 cycles

Pros:

Versatile use for solar lights, flashlights, and high-drain devices
Environmentally friendly, reducing waste from non-rechargeable batteries
Long-lasting with a high recharge cycle count
Efficient performance in various electronic devices
90-day free warranty with 24-hour customer support

Cons:

Not compatible with AA or AAA battery slots
Shorter in length compared to AA-size batteries

Ideal Applications:

Outdoor garden and solar panel lights
High-drain devices like LED flashlights
Electric toothbrushes and similar electronics

9. Buya Battery 3.2V Lithium-Ion Solar Light Battery

Specifications:

Size: AA
Voltage: 3.2V
Chemistry: NiMH
Capacity: 600mAh
Pack Size: 1

Pros:

Ideal for specific solar light systems.
Provides extended power with 600mAh.
Reduces waste by allowing multiple recharges.
Convenient for devices designed for AA batteries.
Affordable price for the performance.

Cons:

Not suitable for standard 1.2V AA devices.
Specifically designed for solar lights and similar applications.

Ideal Applications:

Perfect for solar garden and landscape lighting.
Suitable for various outdoor illumination devices.

10. HyperPS 3.2V LiFePO4 14430 Rechargeable Battery

Specifications:

Battery Type: LiFePO4 (Lithium Iron Phosphate)
Capacity: 400mAh
Nominal Voltage: 3.2V
Dimensions: 14 x 43mm (1.69 x 0.55 inches, H x Dia.)
Weight: 14.9 g per battery

Pros:

Ensures a steady power supply.
Easy to fit into various devices.
It can be recharged multiple times, reducing waste.
LiFePO4 provides enhanced safety and stability.

Cons:

Not AA-compatible
Limited capacity
Ideal Applications:
Solar panel
Flashlights

Part 3. Key factors to consider when choosing a 3.2 V solar battery

The following are the factors to consider when choosing a 3.2 V solar battery:

Battery capacity: A more significant capacity means more backup power during cloudy days. You’ll want to match this with your energy needs.
Cycle Life: Check the battery’s capacity for charge and discharge cycles. A higher cycle life means a longer-lasting battery.
Efficiency: The efficiency of charging and discharging is critical. Higher efficiency leads to more power being used.
Safety features: Ensure they have built-in protections against overcharging.

Part 3. FAQs

Can I use a 3.7V battery instead of a 3.2V in solar lights?

No, you can’t. While the voltage difference may seem small, it can influence the performance of your solar lights.
What is the difference between a 1.2V and a 3.2V battery?

The primary difference is voltage. A 1.2V battery is typically found in older, low-power applications, while 3.2V batteries are used in modern setups like solar systems.
What is the voltage range of a 3.2V LiFePO4 battery?

A 3.2V LiFePO4 battery operates within a voltage range of about 2.5V to 3.65V.
How do you charge a 3.2V LiFePO4 battery?

Charging these batteries requires a compatible charger designed for LiFePO4 chemistry.
What is the use of a 3.2 V LiFePO4 battery?

A 3.2 V LiFePO4 battery is commonly used in solar energy storage systems. It provides stable and efficient energy storage.