Charging wallets are digital payment and balance systems used in EV charging apps and platforms to store funds, manage payment methods, and settle charging costs across direct and roaming sessions. They enable quick session starts, reduce payment friction, and support features like prepaid credit, corporate invoicing, and multi-user cost allocation.
What Are Charging Wallets?
A charging wallet is an account-level payment layer that sits between the user and the charging transaction. Depending on the platform, a wallet can:
– Store a saved payment method (card, bank debit, invoice account)
– Hold prepaid credit or a monetary balance
– Track charging spend history and receipts
– Support refunds, chargebacks, and dispute handling
Charging wallets are used by CPOs, eMSPs, fleet programs, and workplace/residential charging schemes to simplify payment and administration.
Why Charging Wallets Matter
Charging wallets improve both user experience and commercial performance:
– Faster and more reliable payment authorization at session start
– Better conversion from “attempted start” to successful charging
– Reduced transaction costs by batching or optimizing payment flows
– Easier implementation of subscriptions, discounts, and promotions
– Improved accounting for fleets and employers via consolidated billing
For operators, wallets can reduce operational support load and enable more flexible pricing strategies.
Common Types of Charging Wallets
Charging wallets typically fall into these categories:
Stored-Card Wallets (Pay-As-You-Go)
Users keep a payment method on file, and the platform charges per session.
– Simple for public networks
– Often paired with preauthorization or deposit logic
– Supports receipts and automated VAT invoicing where applicable
Prepaid Credit Wallets
Users top up their wallet balance and spend it on charging.
– Useful where drivers prefer budget control
– Can reduce payment failures from per-session transactions
– Common in semi-private networks and certain markets
Postpaid Wallets and Invoicing Accounts
Charging costs accumulate and are billed periodically.
– Common for fleets, corporate users, and subscription plans
– Requires credit control and account verification
– Supports consolidated monthly invoices and reporting
Fleet and Multi-User Wallets
A single wallet can cover multiple drivers, vehicles, or cards under one organization.
– Enables cost allocation by driver, vehicle, depot, or project
– Often integrated with fleet dashboards and reimbursement workflows
– Supports spending limits and access policies
Wallets with Roaming Coverage
For charging roaming, the “wallet” usually belongs to the eMSP, not the CPO.
– Driver pays the eMSP wallet
– The eMSP settles with the CPO through roaming agreements
– Pricing may include roaming markups and fees
This separation is important for customer support and refund responsibility.
How Charging Wallets Work in Practice
Most wallet-based charging flows include:
– User registers and adds payment method or credit
– Platform performs validation (card verification, account checks)
– User starts a session via app, RFID, or Plug & Charge token
– Wallet authorizes the session and applies the relevant tariff
– Session ends, final cost is calculated, and wallet is charged or balance is reduced
– Receipt and invoice data are stored for reporting and compliance
Wallet Features That Affect Revenue and Operations
Well-designed charging wallets often include:
– Preauthorization / deposits to reduce unpaid sessions
– Automated VAT invoicing and receipt generation
– Refund and dispute workflows
– Promo codes, credits, and loyalty rewards
– Spending limits and user role permissions (for fleets)
– Support for multiple payment rails (cards, SEPA debit, invoice)
Security and Compliance Considerations
Because wallets touch payments and personal data, key requirements include:
– Encrypted communications and secure credential storage
– PCI-DSS compliant payment handling (often via third-party payment processors)
– Fraud prevention and anti-abuse controls
– Audit trails for financial reconciliation
For enterprise deployments, cybersecurity expectations often extend to the full charging platform and backend.
Common Pitfalls with Charging Wallets
– Payment friction at onboarding (too many steps, failed verification)
– Poor handling of partial authorizations and refunds
– Complex tariffs that make wallet charges hard to understand
– Mismatch between wallet pricing and on-site price display (trust issue)
– Weak reconciliation between CPMS session records and payment records
Related Glossary Terms
Charging Session Revenue
Charging Session Analytics
Charging Revenue Models
Charging Subscription Plans
Charging Roaming
eMSP (E-mobility Service Provider)
Payment Processing
Encrypted Communications
Plug & Charge
CPMS (Charge Point Management System)