The JD Allen 10–20 December sale, what you’re getting for £2,000 excl. VAT
For a limited window, 10–20 December, we at JD Allen are promoting the Pylontech Force L2 14.2kWh battery system at £2,000 excl. VAT.
This is relevant for two groups:
● Homeowners who want to store more of their solar generation and reduce reliance on peak-time electricity.
● Installers and electrical contractors who want a proven, modular low-voltage storage option that’s practical on site.
If you’re exploring install or retrofit options, start here: energy battery storage and retrofitting. If you need an electrical team that understands the wider system, see domestic and commercial electrical work.
Table of Contents
Why home energy storage is a smart add-on, even if you already have solar
A battery is not just about having solar, it’s about using more of what you generate. Without storage, a lot of daytime generation can be exported when you are not at home, then you buy electricity back later in the evening.
If you’re planning solar or upgrading an existing system, battery compatibility matters. In particular, the inverter you choose can make future storage easier, or more complicated. If you want a plain-English guide on that side of the decision, read choosing the right solar inverter for battery add-ons.
Batteries are also one of the most commonly misunderstood “extras” on solar quotes. They do not come as standard, but they can be a long-term value add, which is why a genuine sale price is worth taking seriously. See hidden costs of solar installs, and where batteries fit in.
Pylontech Force L2 14.2kWh in plain English
The Force L2 is a home energy storage system built around LFP battery chemistry (lithium iron phosphate). LFP is widely used in stationary storage because it is known for strong
thermal stability for increased safety, and long cycle life (meaning it can survive more charge/discharge cycles before operating at reduced capacity) compared with some other lithium-ion chemistries. See the MDPI review on recent advances in lithium iron phosphate (LFP) battery technology for a technical overview.
Low-voltage, what that means for compatibility
This is a low-voltage battery system, commonly used in domestic energy storage design for its straightforward integration. For installers, the key is compatibility with the wider system design and commissioning approach, including inverter choice and wiring layout.
Key specs that matter on site, performance and protection
Here are the headline figures JD Allen will reference when explaining why this unit is strong value during the promo window:
● Nominal energy: 14.2kWh
● Battery chemistry: LFP battery
● Depth of discharge (DoD): 90%
● Continuous discharge rate: 4.8kW
● Surge discharge rate: 5.04kW (15 seconds)
● Installer documentation: commissioning, system and installation notes are available in the Pylontech Force-L2 installation manual (PDF)
Safety note: battery systems should always be designed and installed to relevant standards and guidance. If you want a credible public reference for responsibilities and safe working around battery energy storage, see the HSE guidance on battery energy storage systems.
Price comparison, why this sale is unusually strong right now
This promo is designed to be visibly “better than retail”.
For context, you can see an openly published market price on Powerland’s Pylontech Force L2 14.2kWh product page. Against that anchor, JD Allen’s £2,000 excl. VAT sale price stands out as a strong opportunity for anyone already planning battery storage as part of a solar upgrade, retrofit, or new design. But remember, it’s only available from the 10th to the 20th of December.
Next step, check compatibility, then book an install with JD Allen
If you want this battery because you’re planning a solar upgrade, an EV charger install, or a retrofit to an existing system, the fastest route is:
1. confirm your current inverter and electrical setup,
2. confirm physical install location and access,
3. confirm commissioning requirements, then schedule.
Start with energy battery storage and retrofitting, then make an inquiry via contact JD Allen Solar.
You can also return to the JD Allen Solar homepage to explore our other services.
FAQs
Is 14.2kWh enough for a typical home?
Often, yes, but it depends on your evening usage, heating method, and whether you want to prioritise self-consumption, backup thinking, or both. The most accurate approach is to review your usage profile and your solar generation.
What does “low-voltage” mean for installers?
Low-voltage storage refers to the battery system voltage class used in many domestic designs. Compatibility depends on the inverter and overall system architecture. Installer documentation and system notes are available in the Pylontech Force-L2 installation manual (PDF).
Why choose an LFP battery for home energy storage?
LFP chemistry is widely used in stationary storage because it is associated with strong thermal stability and long cycle life,
Can I add this battery now and solar later?
In many cases, yes, but the inverter and system architecture matter. If you want to be future-proof, review inverter choice first, choosing the right solar inverter for battery add-ons.
