This review delves into the Ampinvt 51.2V 100Ah Power Wall battery, a budget-friendly energy storage solution. Weighing in at a substantial 110 lbs, this wall-mount battery requires careful handling during installation, facilitated by its sturdy steel French cleat mounting system. The review covers the entire process, from unpacking and mounting the hefty unit, to conducting thorough capacity and safety tests. Special attention is paid to the battery's internal components, highlighting the quality of construction and the inclusion of a robust, reliable BMS (battery management system).The Ampinvt battery boasts a user-friendly interface with a clear LCD display, showcasing vital information like voltage, current, temperature, and cell capacity. Performance testing reveals a capacity slightly below the advertised 5120 watt-hours, attributed to the conservative BMS settings prioritizing safety. This review ultimately assesses the overall value, build quality, and safety features of the Ampinvt Power Wall battery, providing a comprehensive analysis for potential buyers considering a cost-effective energy storage solution.
Pros And Cons
- Budget-friendly option
- Wall-mountable with steel French cleat
- Conservative BMS parameters
- High build quality with well-organized internal components and good wire management
- Includes a 125 amp built-in breaker
- Features LED indicators, dry contacts, and address switch for paralleling multiple batteries
- Communication features (RS485, CAN, RS232)
- Smart BMS with user interface for checking voltages, temperatures, and other data
- Includes a 1.5-meter CAT5 cable and comprehensive user manual
- Temperature protection (high and low)
- Rated for over 6000 cycles
- Very heavy (around 110 lbs)
- Capacity slightly less than rated (achieved 97.7% in the test)
- Limited information available on the cells used
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Unboxing and First Impressions
The Ampinvt 51.2V 100Ah Power Wall battery arrived in a heavy crate weighing approximately 130 lbs (shipping included). The battery itself is quite substantial at around 110 lbs (50 kg), requiring at least two people for safe handling. This is a wall-mount battery, featuring a sturdy steel French cleat mounting system. The conservative BMS parameters are notable for safety.
The battery boasts a conservative BMS, prioritizing safety. Its model number, LP AF51 AA, is clearly marked. The wall mounting system is straightforward with included brackets. Though I mounted it lower than ideal due to space constraints, the placement is functional.
Installation and Mounting
Due to existing conduits and planned electrical work, I used decking boards and stainless steel lags to securely mount the French cleat to the wall studs. This created a sturdy and safe mounting system, but I also needed additional support.
I utilized a ratchet strap and packing foam to safely lift and secure the battery in place before finally mounting it to the wall using the French cleat system. Using a chain fall hoisted the heavy battery onto the prepared cleat mounts.
The French cleat system is efficient and secure, simplifying wall mounting, even for a heavy battery. This method of installation was crucial for safe handling of the battery's substantial weight.
Capacity Test and Performance
The capacity test involved charging the battery to its high voltage disconnect (56V) using a LeTime inverter. An energy meter tracked the discharge process, aiming for approximately 20 amps of draw at roughly a 1400-watt load.
The battery consistently performed well, delivering approximately 5000 watt-hours during the discharge test. This was slightly below the rated 5120 watt-hours, likely due to the conservative BMS parameters.
The BMS’s internal meter accurately reflected the remaining capacity throughout the test. The battery shut down safely at around 44 volts, as expected.
Internal Build Quality and Safety Features
The internal components are neatly arranged and well-constructed. The cells are securely mounted with substantial brackets and foam standoffs, protecting them from damage. The BMS board is a well-known and reliable model (Pace 16s).
High-quality wiring and connections are evident, with dual 7-gauge wires and hydraulic crimp connections. An active 5-amp balancer ensures cell balance. Temperature sensors are strategically placed throughout the battery.
The BMS includes comprehensive safety features, including low and high-temperature protection. Testing confirmed these protections function correctly, stopping charge at both temperature extremes.
Features and Specifications
The Ampinvt battery features a user-friendly interface with a clear LCD display for monitoring voltage, current, temperature, and cell capacity. It uses CAN bus communication for integration with compatible inverters.
The dimensions are approximately 16 3/4 inches wide, 23 5/8 inches high, and 7 inches deep (including the French cleat). The battery can be paralleled up to 13 units for larger energy storage systems.
Included with the battery are terminal caps, M8 bolts, a 1.5-meter CAT5 cable, and a comprehensive user manual. A built-in 125-amp breaker enhances safety.
Final Verdict
The Ampinvt 51.2V 100Ah Power Wall battery offers excellent value for its price (around $895 at the time of this review). While it fell slightly short of its rated capacity during testing (approximately 97.7% of rated capacity), this is largely attributed to the conservative BMS settings.
The build quality and safety features are impressive. The inclusion of CAN bus communication, multiple safety features (including high and low-temperature cutoffs), and a user-friendly interface make this a compelling option for budget-conscious buyers.
The Ampinvt power wall shines with its build quality, features, and competitive price, although the slightly lower capacity than advertised should be taken into account. Overall, it’s a great option for those seeking a robust and affordable energy storage solution.