HomeBlogThe DC Fast Charger Buying Checklist: 8 Criteria CPOs Actually Use

The DC Fast Charger Buying Checklist: 8 Criteria CPOs Actually Use

1. The Problem: Why “Just Price” Gets You Stranded Equipment

A CPO in Central Asia signed a purchase order for 20 chargers at what looked like an attractive price. Eight months later, three units were sitting idle because the local grid couldn’t handle the planned capacity. The other 17 were running, but the supplier’s remote support team was unreachable across the time zone, and replacement power modules took six weeks to arrive. The site operator had been negotiating a lower unit price and missed the questions about transformer capacity, module availability, and time-zone coverage.

This is not unusual. The DC fast charger market has dozens of Chinese manufacturers with similar-looking spec sheets. Price is the easiest differentiator to compare, which is why it becomes the only one most buyers check. But at 5-12% average utilization rates in emerging markets, the real cost isn’t the unit price. It’s the cost of getting the wrong hardware, the wrong support, or the wrong terms.

A proper procurement checklist forces you to ask the questions that matter after the first 90 days of operation, not before. Below are the eight criteria that actually separate working deployments from stranded assets.

2. Criterion 1: OCPP Compliance Is Not a Marketing Claim

OCPP 1.6J is the minimum bar for any charger a CPO will connect to a management platform. But “OCPP compatible” on a spec sheet means different things depending on which profile the supplier implements.

Core, Local Auth List, Smart Charging, and Firmware Update — these four profiles determine whether your charger can actually talk to your CSMS, whether remote diagnostics work, whether you can schedule charging windows, and whether you can push firmware updates over the air. Some suppliers implement Core only and claim “OCPP support.” Others implement all four with real field testing.

The question to ask: Can you share the OCPP conformance test report from a third-party lab, not just a statement? And does the charger support all four profiles, not just Core?

Anari Energy chargers support OCPP 1.6J with all four profiles (Core + Local Auth List + Smart Charging + Firmware Update) as standard, with conformance tested before shipment. This matters because switching platforms later is expensive — platform lock-in is one of the most common hidden costs in charging operations.

3. Criterion 2: Power Module Availability and Lead Time

A charger without replaceable power modules is a liability waiting to happen. When a 30kW module fails, the entire unit may need to be sent back to the factory — or you need spare modules on site, ready to swap in minutes.

The question to ask: Do you keep spare power modules in regional warehouses? What is the average response time for module replacement? Is the module design modular and field-replaceable, or is it a sealed unit?

Anari uses 20kW, 30kW, and 40kW mainstream modules alongside 60kW and 80kW newer-generation units, all in a plug-in modular architecture. The split-system Fora line reaches 360kW to 960kW by combining these modules. Standard delivery is approximately 30 days. When module availability and replacement logistics are unclear at the procurement stage, they become critical failures at year two.

4. Criterion 3: Certification That Survives Border Inspection

CE marking on a Chinese charger often means self-declaration, not notification body certification. The difference matters at customs. A charger with only a self-declared CE certificate may clear initial import but fail routine market surveillance checks or insurance audits. TÜV Rheinland certification from an actual notified body carries significantly more weight.

The question to ask: Which certification body issued the CE mark? Is it a self-declaration or a notified body assessment? Are individual models certified, or is the certificate company-level only?

Anari holds company-level CE and TÜV certification through self-developed testing, plus individual model certification for the Aquila DC series. The Pales DC model operates under company-level coverage. This distinction affects your ability to pass local market surveillance and your insurance coverage if a fire incident occurs.

5. Criterion 4: Thermal Performance at Your Climate

A charger rated at 96% efficiency at 25°C ambient may drop to 88% at 45°C. In hot markets — the Middle East, Southeast Asia, parts of Africa and South America — thermal derating is not a edge case. It is the operating condition for much of the year. When a charger derates, it loses revenue at the exact time when demand peaks.

The question to ask: What is the sustained output at 45°C ambient? Is there a published thermal derating curve? What cooling system is used (natural convection vs. forced air vs. liquid)?

Standard Anari specifications cite ≥96% efficiency at normal output power. For hot-climate deployments, ask for the derating curve before signing. A 6% efficiency gap across a year of sales is not theoretical — it is thousands of dollars in lost margin that never appears on any repair invoice.

6. Criterion 5: Response Time and Time Zone Coverage

A charger failing at 2am local time needs a response team that is awake and available. Many Chinese suppliers operate on China Standard Time (CST, UTC+8). If your site is in GMT+3 (Middle East) or GMT+5 (Central Asia), a 9am-6pm CST support window maps to 3am-12pm your time — and the overnight failures fall outside it.

The question to ask: What are your support hours in my time zone? Do you have local partners or third-party service contracts in my region? What is the SLA for remote diagnosis versus on-site dispatch?

Anari’s team communicates directly with operators — no ticketing system middleman. This is structural, not a marketing promise. For emerging market CPOs, having a supplier who responds within hours, not days, is often the difference between a two-hour downtime and a two-week one.

7. Criterion 6: Payment Terms and Risk Allocation

TT prepaid is the standard for Chinese manufacturing. But the terms you negotiate at PO sign-off determine how much risk you carry during the deployment phase. A deposit structure that puts 50% upfront with no performance milestone leaves you exposed if the hardware arrives non-compliant.

Issues to be confirmed: What is the payment schedule? Are there any milestones linked to shipping documentation, arrival inspection or commissioning? If the equipment fails the acceptance test, how will it be handled?

For pilots and first-time buyers, Anari usually formulates terms that match the risks: part of the payment is made when the order is confirmed, another part before shipment, while retaining flexibility for LC payments in markets where TT is difficult to implement. Its core objective is to align the payment schedule with your actual cash flow position, rather than blindly accommodating the supplier’s requirements.

8. Criterion 7: Platform Compatibility and Vendor Lock-In

Proprietary charging platforms are the quiet trap in EV infrastructure. A supplier who bundles hardware and software together creates a dependency that becomes expensive to exit. When the platform raises subscription fees, changes its API, or shuts down, migrating your fleet becomes a multi-month project with real costs.

The question to ask: Does the charger require your proprietary platform, or does it support open standards (OCPP)? Can I use my existing CSMS? What happens to my data if I switch platforms?

Anari chargers support OCPP 1.6J natively and are not locked to any specific platform. This means you choose your management software independently, and switching costs are limited to configuration time, not hardware replacement. This is one of the most frequently cited reasons CPOs choose Anari over bundled alternatives.

9. Criterion 8: Real-World Uptime Data, Not Just Specifications

Spec sheets show ideal conditions. Field data shows reality. A supplier that can share anonymized uptime statistics from actual deployments — especially from your region — gives you a signal that spec sheets cannot.

The question to ask: Can you share uptime data from sites similar to mine? What is your mean time between failures (MTBF)? How many sites do you operate in my region currently?

Published field data from UC Berkeley and other research groups shows a consistent gap between operator-reported uptime (95-98%) and real-world functional availability (73-80%) for DC fast chargers. This gap exists because dashboards track “connected” status, not “charging successfully” status. A charger that powers on but cannot initiate a charge session is worse than useless — it wastes driver trust.

10. How to Use This Checklist

Before RFP: Print this list. Send it to shortlisted suppliers with a request for documented answers, not bullet-point responses.

During negotiation: Use each criterion as a bargaining lever. If a supplier cannot answer Criterion 2 (module availability), that is a risk you need to price into your TCO model.

After delivery: Track the same eight criteria quarterly. Supply relationships degrade — supplier A today may not be supplier A in year three.

The chargers you install today will still be operating in year five. The procurement questions you skip now become operational problems later. Eight questions take 30 minutes. The wrong answer takes years to fix.

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*Data note: UC Berkeley field study on DC fast charger functional availability (Human Factors, 2023; San Francisco Bay Area data, 2022). Certification and product specifications are Anari Energy company claims, verified against internal documentation. All other claims reflect operational experience from deployment support across 30+ countries.

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