Your festival stays
charged.
You get paid.
Designed to be your highest-margin attendee service line — at zero cost to you.
The problem
When an attendee's battery dies, their festival experience changes. They stop spending, lose their friends, and leave early. You lose F&B revenue, merch sales, and social-media amplification.
Lost Connection
Attendees spend hours looking for friends instead of experiencing stages or vendors.
Lower Spend
Without digital wallets or festival apps, per-head spending drops.
Zero Amplification
No battery, no Instagram stories, no TikToks — no organic marketing for next year.
Safety Concerns
Inability to receive emergency broadcasts or contact medical staff when needed.
Why us, not the alternatives
Lockers charge phones. We charge any device — and keep your attendees happy and ‘spending’.
Most festivals still solve charging with a cable tent or a wall of lockers. Both are cost lines. Mas Battery is a revenue line.
Your brand, not theirs
City apps need attendees to already know the brand. At your festival, the brand is yours — our stations carry your logo.
You share the revenue
City apps pocket every rental. City apps pocket every rental. We share rental revenue, and we share LED ad-screen sponsorship revenue. Two new lines, one partner.
Different from a city power-bank app
Why not just use a
city power-bank app?
City apps are built for bars and airports — not for festival crowds.
No app required
Tap a card, take a bank, walk and return. That's it — no download, no signup, no friction at the gate.
The bottom line
Zero investment.
Zero risk.
Pure upside.
We absorb every euro of CapEx for hardware, shipping, and staffing. You provide a small footprint and power access. We split the gross rental revenue. It's that simple.
Free hardware & delivery
All stations, banks, cables, and on-site equipment supplied at our cost.
On-site support staff
Our team monitors and rebalances stations throughout the event — included in the partnership.
Generous revenue split
A meaningful share of every rental flows directly to your organization, settled post-event.
Pricing that fits your festival
Sized to your event,
not the other way around.
We've run both hourly and pass-based models. The right structure depends on your audience, your event length, and how your guest-services team wants to handle support. We walk through the options together on the call.
Hourly rental
Pay-as-you-go for casual events and shorter durations. Familiar to attendees who've used city power-bank apps.
Day or festival pass
Flat-fee unlimited swaps. Predictable for attendees, easy on your guest-services team.
Custom mix
Hybrid pricing, modeled around your audience. We'll work out the right structure on the call.
Logistics
Infrastructure without the headache.
Hardware
Industrial hardware.
Frictionless UX.
Tap-and-go simplicity, no app required.
Tap and Go
Card, Apple Pay, or Google Pay. A fully charged bank ejects in seconds.
No app needed
No download, no signup, no account. Attendees walk up and pay with what's already in their pocket.
HOW IT WORKS
Stay Charged. Stay Connected.
Built where festivals live
Designed, deployed, and supported from Spain. WhatsApp support in español and english. Real people on call when it counts.
Spanish entity (Mas Battery, S.L.)
On-site response when it counts
WhatsApp-first ops
Valencia HQ
Ready before you sign
Festival-grade compliance — already documented.
The certifications your operations and legal teams actually need.
CE Declaration of Conformity
UN38.3 transport certified
RII-AEE registered (Spain)
Liability coverage per station
Full compliance binder available for your operations and legal team on request.
FAQ
Questions we get most.
Why not just buy the hardware and run this ourselves?
You could. The ops complexity that comes with it — Spanish import compliance, payment pre-auth for the keep-it tier, bilingual on-site support, deployment logistics, sponsor sales, refunds, bank reconciliation — is what most organizers ask us to handle for them, in exchange for a share of the revenue.
Are the batteries Apple-certified?
Our stations and banks are CE-certified, UN38.3-compliant for transport, and RII-AEE registered in Spain — the certifications that operations and insurance teams actually need. Apple's MFi program is a separate consumer-electronics standard; we're on the roadmap to add MFi-spec cells for Tier-1 deployments in 2027.
What if it rains?
Placement is something we work through with your production team in detail during the pre-event walkthrough. Stations sit under existing covered structures — entrances, stage wings, food courts — so they stay out of direct weather. The placement plan is agreed together before deployment, with the conditions and site map your team knows best in mind.
How long does install take?
We arrive ahead of gates, deliver and connect every station before the event opens, and lead a quick on-site walkthrough with your production team. Typical installs are completed in a single day on site.
What languages do you support on site?
Our on-site team operates in español and english. WhatsApp support runs in both languages throughout the event.
What happens if a festival attendee loses a battery?
If an attendee loses a battery, the attendee pays for it, and your team never has to worry about it.
For venues & operators
Let's talk about your venue.
Tell us about your venue and what you need — we'll come back within one working day with a tailored plan.
Replies within one working day. Based in Valencia, working across the EU.
