This page is kept for reference only. The Black Friday group purchase for the Marstek home battery that ran in 2025 has closed. Prices, discounts, specifications and conditions mentioned at the time no longer apply and cannot be relied upon.
No current prices, stock, delivery times or savings promises are published on this archive page. For today's selection, specifications and conditions, always use the live product pages.
If several households or neighbours want to buy the same home battery together, it is wise to discuss the plan with Off Grid Supply first. A group purchase is not automatically cheaper: pricing, availability and conditions depend on the supplier at that moment.
Bring the following topics up in that conversation: which configuration or model you prefer, how many participants you expect, one or more delivery addresses, the desired installation period and who will act as the contact person for the group. Also ask how payment, delivery and any installation are handled.
Only after that conversation can you receive a concrete offer. Until then, no discount, saving or delivery time is guaranteed. Current pricing and product information are always shown on the live pages of Off Grid Supply.
Decide whether you want a plug-in model, a fixed installation or a portable power station, and which capacity fits your situation.
Give a realistic estimate; the supplier can then indicate what is feasible and what is not.
Clarify whether delivery goes to one location or to individual addresses, and which period suits the group.
Payment arrangements, warranty, installation requirements and delivery times are discussed with Off Grid Supply in advance. No group discount is promised.
View the current plug-in home batteries at Off Grid Supply, or request a quote based on your own situation and consumption.
This page concerns the expired 2025 promotion. No current prices or discounts are stated here.