The ABB Installation Mistakes That Cost Me $18,000 (And What to Do Instead)

The Bottom Line

If you're installing ABB equipment for an EV charging project, here's the bottom line: don't guess the details. The three most expensive mistakes I've made in six years of ABB work all came from assuming compatibility, skipping surge protection, and rushing to hit a rebate deadline. Combined, those assumptions cost me over $18,000. The fix? Treat certainty as a budget item, not an optional extra.

Why I'm the One Telling You This

I'm an electrical contractor in New England. I've handled ABB equipment orders for six years, and I've personally made — and documented — 14 significant mistakes, totaling roughly $18,000 in wasted budget. I now maintain our team's pre-install checklist to make sure we don't repeat them. This isn't theoretical.

The first big mistake happened in September 2022. We ordered 32 ABB installation products (the e145-38ea series) without checking whether they matched the ABB smart meters we were installing. The meter cabinets looked fine on paper. But the e145-38ea units were physically incompatible with the meter's terminal layout. 32 units, $3,200, straight to the trash.

Lesson 1: ABB Smart Meters and the e145-38ea Mismatch

The e145-38ea is part of ABB's installation product lineup, but that doesn't mean it works with every smart meter. In my case, the supplier's quote listed both as “ABB,” so even the order confirmation looked right. I didn't realize the e145-38ea was designed for a different form factor until we tried to mount it. (Mental note: never trust a model number until you see the datasheet.)

That mistake taught me to keep a compatibility matrix for ABB smart meters and installation products. It's a simple spreadsheet, but it's caught 47 potential errors in the past 18 months. Another thing I do now: I archive the official ABB spec sheets for every project. When a client asks whether their ABB smart meters will qualify for an energy-efficiency claim, we can show them the documentation. Per FTC guidelines (ftc.gov), environmental claims need substantiation — and that paperwork saves us from making promises we can't back up.

Lesson 2: Never Skip a Power Cord Surge Protector

The second expensive lesson involved surge protectors. A client wanted us to skip the power cord surge protector to save $30 per unit on a 12-charger install. I agreed because that's what they asked for. Three months later, one charger's control board fried during a lightning storm. The replacement cost $800 plus a week of downtime. (Which, honestly, was worse than the $30 we saved.)

Now I treat surge protection as non-negotiable. ABB has its own surge protection devices that integrate with their chargers, and they're not expensive. But more importantly, the surge protector's rating needs to match the environment. A basic power strip with a surge rating isn't the same as a proper Type 2 SPD. I learned that from a warranty denial.

Lesson 3: How Low Can You Discharge a 12V LiFePO4 Battery?

A related issue came up with a client's backup power design. They had a 12V LiFePO4 battery (100 Ah) running a small ABB control circuit. The question was: how low can you discharge a 12V LiFePO4 battery? The short answer is about 20% state of charge. LiFePO4 is good for around 80% depth of discharge, meaning you can safely stop at 20% SOC. But that's with a proper battery management system and at moderate loads. We found that pushing to 90% DOD on a regular basis cut cycle life significantly.

For a 12V LiFePO4 battery, the per-cell cutoff is typically 2.5V, which gives a pack cutoff around 10V. But that's the absolute floor; staying above 20% SOC is where you get the long cycle life. If you regularly discharge to 2.5V/cell, you're buying batteries twice as often.

The mistake I made in 2023 was designing the system to a 95% DOD because I'd read “LiFePO4 can be fully discharged.” It can, technically, but not repeatedly without damage. The battery's voltage sagged under load and the controller started glitching. We replaced two batteries before a manufacturer rep told us to check the actual cycle life chart. (I really should have read the datasheet first.)

Now the rule is: for ABB controllers and telemetry, keep the cutoff at 20% SOC unless the battery datasheet explicitly says otherwise. The BMS is the limit, not the cell chemistry.

Lesson 4: Maine EV Charger Rebates Are Not Retroactive

And then there's the Maine EV charger rebate. If you're an installer, you've probably chased this. We missed it once because we ordered the wrong charger model. The rebate program requires the charger to be on an eligible list. Our client wanted an ABB unit, but we selected one that wasn't listed for that program. We discovered this after the install, so the rebate was denied. That was a $500 rebate we had to tell the client they weren't getting.

The fix: before quoting, check the current eligible product list and rebate amount. The program changes every year, and sometimes every quarter. The most recent data I have is from Q4 2024; verify current details before planning your budget. Also, leave enough time to submit the paperwork. We sent our first application via USPS First-Class Mail — as of January 2025, that's $0.73 for a standard letter. The postage is the cheapest part of the process; the expensive part is getting the form wrong and missing the deadline.

Rushing at the deadline leads to wrong forms, missing invoices, and rejected applications. We paid $400 for rush delivery once to beat a deadline, only to realize the rebate paperwork required a signed form from the homeowner that we'd forgotten about. Missed it by two days. (Surprise, surprise.) We would have been better off paying a notary to be on site the day we finished.

The Real Cost of Not Paying for Certainty

The common thread across all these mistakes? I was trying to save money or time, and it backfired. The $30 surge protector, the “good enough” battery discharge setting, the quick charger selection, the rush to beat a deadline — every one of them was an attempt to avoid paying a small upfront cost for certainty. In the end, I paid more.

In March 2024, we paid $400 extra for rush delivery of an ABB smart meter module because we had an inspector visit the next day. The alternative was missing the window and losing a $15,000 contract. That $400 bought certainty, and it was worth every cent.

What I Still Don't Know (Boundaries)

To be fair, not every project needs the highest-tier ABB equipment. Some installs are relatively straightforward, and the premium isn't justified. And I can only speak to commercial jobs in the northeastern US — if you're working with different voltage standards or rebate programs, your calculus might be different. ABB's product line is huge; I've only touched installation products, smart meters, surge protection, and battery compatibility. This was accurate as of Q4 2024, and Maine's rebate program changes fast, so verify current rates before budgeting.

But the core lesson is broad: in an ABB-based installation, the cheapest option is rarely the cheapest when you count rework, downtime, and lost rebates. Budget for certainty.