Top 5 Mistakes to Avoid When Choosing a Battery Storage System

Jophine Hemor
Jul 30
3 min read

With solar adoption on the rise, many people are adding a battery storage system to secure energy independence, reduce electricity bills, or gain backup power during outages. But not all battery systems are created equal and many buyers unknowingly make costly mistakes when choosing the wrong product.

In this blog, we’ll guide you through the top five mistakes to avoid when choosing a battery storage system and introduce smarter battery systems to help you build a reliable, future-ready setup.

Mistake #1: Choosing the Wrong Battery Type

One of the most common mistakes is selecting outdated battery chemistry like lead-acid for modern energy storage applications. Lead-acid batteries:

Are cheaper upfront but have low efficiency
Require frequent maintenance
Have short life cycles (usually <1500 cycles)
Perform poorly in deep discharges

Better Option: Lithium Battery Storage Systems Lithium Iron Phosphate (LiFePO₄) batteries offer:

Up to 7,000 cycles
95%+ efficiency
No maintenance
Lightweight and compact design

✅ We recommend our Server Rack Lithium Battery and Wall-Mounted Powerwall Battery for reliable performance and safety.

Battery Storage System — Powerwall Battery

Mistake #2: Underestimating Your Energy Demand

Another major error is purchasing a battery storage system that’s too small or too large for your needs. Overspending or under-powering your home/business is a serious risk.

What You Should Do Instead:

Measure your daily energy use (in kWh)
Decide how many backup hours you want
Consider future appliances or EVs you might add

Example:

A small home might need 5–10kWh of usable storage.
A business with higher loads could require 20–30kWh+.
Use multiple server rack batteries in parallel
Install two or more wall-mounted batteries to extend runtime

Mistake #3: Choosing Batteries Incompatible with Your Inverter

Your battery and inverter must “speak the same language.” If not, your system may:

Misread charge/discharge levels
Shut down during peak demand
Operate at reduced efficiency

Solution: Choose batteries with communication protocols like:

RS485 / CAN Bus
Compatible with Growatt, Deye, Victron, LuxPower, LV6548, and more

✅ Our lithium batteries are inverter-ready and include BMS with CAN & RS485 support for real-time monitoring and seamless integration.

Mistake #4: Ignoring Safety and Certification

Safety is not optional. Some cheap or unbranded battery storage systems may lack:

Certified BMS
Overheat protection
CE / UL certifications
Proper casing for indoor installation

Avoid batteries that cut corners.

Our server rack and powerwall batteries are built with:

LiFePO₄ chemistry (thermally stable and non-toxic)
Smart BMS with overcurrent/overvoltage protection
CE and UL certifications
Flame-retardant, IP-rated enclosures

Mistake #5: Not Planning for Scalability or Future Needs

Some users regret buying a fixed-size system when their energy demand grows. If your system can’t be upgraded, you may need to replace the whole thing.

Plan for expansion from the start.

Modular battery storage systems are ideal. You can start small and scale up later by: