Uploaded December 2025 | Updated September 2026, 2 days ago

---

Stop overpaying for EcoFlow expansion batteries! Today, I'm showing you the batteries EcoFlow doesn't want you to know about: the new WattCycle Server Rack LiFePO4 batteries.
I've officially expanded my EcoFlow capacity by 10X for less than the cost of two OEM expansion batteries. By using the expansion port hack I showed in my previous video, we are connecting 10kWh of professional-grade power to an EcoFlow power station.
In this video, we do a full teardown of the WattCycle 48V 100Ah server rack battery. I was shocked by the build quality: Grade A+ cells, a massive LCD touchscreen, Bluetooth app control, and UL listings. Is this the ultimate budget solar setup for 2026? Let's find out!
Warning: DIY battery hacks can void warranties and be dangerous. Proceed at your own risk.

Buy WattCycle Server Rack Battery: wattcycle.com/collections/all/products/48v-100ah-server-racks-bluetooth-lithium-battery?ref=fspaohfd
Be sure to use the code: TRICK at checkout!
OR buy from Amazon: amzn.to/4s1SMNh

HUGE NEWS!!! You can now buy a pre-made adapter cable that is much safer and accomplishes exactly what you see in this video!
wattcycle.com/products/5120w-expansion-pps-kit-for-ecoflow-delta-50a-cable?ref=fspaohfd
Be sure to use code: TRICK for extra savings!
OR buy on Amazon: amzn.to/4x1UNdN

Watch my power station hack videos: youtube.com/playlist?list=PL-2uuHDasQcoscck46fqjxNCw6TfeEfsh

Buy EcoFlow Delta 2: amzn.to/3L34ark

EG4 Products from Pay Off Solar: payoffsolar.com/products?ref=TRICK5
Be sure to use my code: TRICK5 and save 5% on your entire order regardless of how large or small!

48v Battery charger: amzn.to/4saQwU3

Space heater: amzn.to/3KXuZgA

Heat Gun: amzn.to/4j7b7Ey

NEED HELP? Ask me a question and get a personal in depth response: ko-fi.com/s/8d8df1880c
OR
Sit down for a personal 1-On-1 hour long video consultation with me and I'll provide answers and insights to anything you want to ask me about from this channel: ko-fi.com/s/dd139831a7

All donations get 100% re-invested in the channel:
buymeacoffee.com/theresatrickforthat

🔍 Looking for something specific? Search across hundreds of my videos — way better than YouTube search: https://tatftsearchapp.netlify.app/

Chapters:
0:00 Best bang for the buck batteries?
0:37 Use server rack batteries to expand EcoFlow Delta 2
2:01 Cost breakdown
3:51 Unboxing the WattCycle Server Rack Batteries
4:31 Specs & Features
8:17 Install the handles
8:54 TWO Battery capacity tests!
10:17 App review
11:14 Internal communication testing
13:02 Heavy load testing
13:45 Battery tear down
15:53 Is this a liable solution???

#wattcycle
#solar
#theresatrickforthat
#offgrid
#rv
#vanlife
#lifepo4

Affiliate Disclosure
As an Amazon associate I earn from qualifying purchases at no cost to you! Thanks for your support!

Disclaimer: Due to factors beyond the control of There's a Trick for That, I cannot guarantee against improper use or unauthorized modifications of this information. There's a Trick for That assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. There's a Trick for That recommends safe practices when working on machines and or with tools seen or implied in this video. Due to factors beyond the control of There's a Trick for That, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not There's a Trick for That