How do I add and edit charge keys in Monta Hub?

A charge key (RFID card or token) lets a driver start a charge session and ties the cost to the account wallet it belongs to. When a charge key is assigned to a member, that member's name appears in transaction exports.

Note: If a charge key is assigned to a member and they start a session while the account wallet is blocked, the session cost is charged to the member's personal Monta wallet instead.

Using generic identifiers — such as those from non-unique RFID cards — can result in sessions being authorised incorrectly or assigned to the wrong account, which may lead to unexpected costs. Monta cannot guarantee that RFID cards bought in the Monta Shop have a unique identifier.

How do I add a charge key?

1. Open the account in Monta Hub.
2. Go to Charge keys.
3. Click Add charge key.
4. Enter the required details:
   • Identifier (RFID) — the unique RFID UID on the card.
   • Name (optional) — a label that appears in transaction exports.
5. Optionally assign the key to a vehicle, member, or charge profile, and set an expiry date and network access.
6. On the Limits step, the recommended usage limits for this account type are pre-filled. Adjust them if needed, up to the account's maximum.
7. Click Pair charge key to save.

How do I edit a charge key?

1. Open the account and go to Charge keys.
2. Click the charge key you want to edit.
3. Update the settings as needed. The Usage limits section shows the three limit fields, each with its maximum displayed.
4. Click Save changes.

How do I set usage limits on a charge key?

Each charge key has three independent limits you can set to control how much it is used:

• Rolling 30-day spend limit (EUR) — maximum cumulative spend over any rolling 30-day window. Spend in other currencies is converted to EUR.
• Rolling 24-hour charge count limit — maximum number of charge sessions per calendar day; the count resets at 00:00 UTC.
• Concurrent charges limit — maximum number of charge sessions open at the same time across all charge points.

Each field shows its maximum allowed value. Each limit requires a value; the field cannot be left empty. A value of 0 is not accepted; to stop a key from charging, block it instead. 

A limit field may show the hint "Leave empty for unlimited". Do not follow it for a charge key's own limits: a charge key cannot be saved with a limit left empty, so enter a value in all three fields. An empty field is only meaningful for the account limits under Charge keys > Settings, where it means Monta’s maximum applies.

How do starting limits, account limits and Monta’s maximum fit together?

There are three tiers that govern every charge key’s limits:

• Monta’s maximum — the highest each limit can be for the account type (Personal: €500 / 6 / 2; Private: €3,500 / 20 / 5; Professional: €5,000 / 30 / 10). Monta sets this, and no key can go above it.
• Account limits — an optional lower ceiling for every key on one Private or Professional account, set by operator users and Monta admins under Charge keys > Settings. A field left empty there means Monta’s maximum applies.
• Starting limits — what a new key starts at: Monta’s recommended values for the account type (Personal: €300 / 6 / 2; Private: €700 / 6 / 2; Professional: €1,000 / 14 / 7). If the account limit is lower than the recommended starting value, the key starts at the account limit instead. An account limit never raises the starting values; it only caps them.

After a key is created, its limits can be raised up to the account limit, or up to Monta’s maximum if the account has no limit set.

Changing an account limit does not affect existing keys. A key whose limits exceed a newly lowered account limit keeps its current values until it is next edited, at which point its limits must come down to the new account limit.

Example: A Private account has a €500 spend limit set. New keys start at €500 instead of €700, and no key on the account can go above €500. Without the account limit, new keys start at €700 and can be raised up to €3,500.

Default and maximum limits by account type

Every new charge key starts at Monta’s recommended limits for the account type it belongs to. If the account has a lower maximum set, the starting values are reduced to match.

When a key reaches a limit

New charges are refused. The refusal is recorded in the charge key authorizations list, where you can see the reason. The key itself is not blocked — it remains active and will accept new charges once the count or window resets.

Existing keys

Keys created before this feature was introduced keep the limits they had at that time, which may be none. An existing key with no limits stays unlimited until someone opens it to edit. Saving an edited key then requires all three limit fields to have values.

Drivers and limits

Drivers can see their key’s usage limits in the Monta app but cannot change them.

How do I set limits for all charge keys on an account?

Operator users and Monta admins can set a maximum for all charge keys on a Private or Professional account. This caps how high any individual key’s limits can be raised. New keys on the account start at Monta’s recommended limits, lowered to the account maximum where it is lower.

Personal accounts are governed directly by Monta and cannot have account-level limits set.

1. Open the account in Monta Hub.
2. Go to Charge keys.
3. Select the Settings tab.
4. Under Charge key limits, enter the maximum values for this account.
5. Click Save changes.

These settings are only visible to operator users and Monta — account users do not see this tab.

How do I restrict where a charge key can be used?

You can restrict a key to specific countries or operators using wallet payment restrictions.

1. Open the account and go to Charge keys.
2. Click the charge key you want to restrict.
3. In the Wallet payment restrictions section, select the allowed countries and operators.
4. Click Save changes.

Where can I manage charge keys across all accounts?

Operators can view and manage charge keys across all accounts from Charge keys in the main navigation. From there you can search and filter across your entire operator, and bulk edit, block, or unblock keys.