LiTime 24V 25Ah Lithium Mobility Scooter & Electric Wheelchair Batteries

The battery has shown promising performance, though there are a few considerations for packaging, setup, and operation. Below is an analysis based on hands-on experience:

Delivery and Packaging
The battery arrived in good condition. While the main components were safe, additional padding on the sides would enhance confidence in shipping durability.

Initial Performance and Measurements
- Initial State of Charge (SOC): Out-of-the-box, the battery measured 26V, corresponding to about 25% SOC. This is fairly typical for lithium batteries during storage.
- Charging Setup: Connected to a Victron MPPT 75/15 controller, it quickly pulled 10A (~270W) from a solar array with a total output of 400W. This efficient charging aligns with LiFePO4 technology's ability to accept high current input.

Consumption and Overnight Discharge
- Power Draw: With a load of ~8W/hour (190W over 24 hours), the battery voltage stabilized at 26.44V overnight. This is an expected and satisfactory performance for light loads like a router and PTZ wireless camera (consumption ~5–8W).
- Parallel Configuration: Adding a second battery in parallel improved performance further, stabilizing voltage at 26.54V with the same load. This demonstrates the scalability and consistent performance of these batteries in parallel setups.

Cost-Effectiveness
The battery was a bargain considering its specifications:
- Capacity: 24V, 25Ah
- BMS: 50A capacity
The price-performance ratio is excellent, particularly for budget-conscious users looking for reliable energy storage.

Winter Preparation
- Cold Weather Concerns: These batteries lack built-in freeze protection, an essential feature for winter usage. However, integrating a Victron temperature sensor to disable charging below 5°C is a smart workaround.
- Heated Storage Solution: The plan to house batteries in a refrigerator with DC-DC step-down conversion for heating is innovative. Ensuring a stable temperature will prolong battery life and maintain performance.

Final Observations
The batteries perform well under moderate usage and offer excellent scalability for parallel configurations. The robust BMS provides safety, and the energy density is competitive for the price. While packaging and freeze protection could be improved, these are minor drawbacks compared to the overall value.

Pros:
- Affordable, especially during promotions.
- Efficient charging and stable voltage under light loads.
- Scalable for higher capacity systems.

Cons:
- Limited freeze protection requires external solutions.
- Packaging could be more robust.

Rating: 4.9/5
Highly cost-effective for light to moderate loads, with thoughtful planning required for winter operation. A great option for those balancing performance and budget.

Customer Support:
I had the pleasure of interacting with Elaine Qiu from Litime's customer support team, and I must say, the experience was great.
Elaine’s expertise in the technical aspects of Litime batteries and their integration into various systems was evident in every interaction.
Rating: 5/5