Batteries

Rolls 4500 Series

£ 488.46GBP · price may vary

Model: RB-S2-L16-EX
Specifications: 5

System Battery Voltage2V
Storage Capacity (C100)1408Ah
Storage Capacity (C20)1040Ah
Storage Capacity (C10)830Ah
Weight (kg)42

Overview

The Rolls 4500 series combines the convenience and portability of the 4000 series, with the extended capacity and cycle life found in the heavy duty 5000 series batteries. They provide a battery with good cycle life at a great price. 2720 cycles to 50% DOD 1785 cycles to 80% DOD 4 year warranty

Specifications

System Battery Voltage	2V
Storage Capacity (C100)	1408Ah
Storage Capacity (C20)	1040Ah
Storage Capacity (C10)	830Ah
Weight (kg)	42

Reading the specifications

Rolls 4500 Series is listed with 5 published specifications from Rolls Battery, including system battery voltage of 2V, storage capacity (C100) of 1408Ah, storage capacity (C20) of 1040Ah and storage capacity (C10) of 830Ah. Those figures are what decide whether this unit fits your system, so read them against the equipment it will connect to before comparing price.

For a battery, the figures that matter most are cycle life at a stated depth of discharge, commonly 3,000–6,000 cycles for LiFePO4, round-trip efficiency, around 90–95% for lithium and 75–85% for lead-acid, communication protocol (CAN or RS485) for talking to the inverter and nominal capacity in ampere-hours (Ah) or kilowatt-hours (kWh). Storage is what turns a solar array from a daytime bill-reducer into a system that covers evening loads and rides through outages. It is normally the single most expensive component, so sizing it correctly matters more than with any other part.

Choosing a battery: the checks that matter

The checks below apply to any battery. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.

Check the continuous discharge rating against your inverter. A battery that stores plenty of energy but can only deliver 50 A cannot support a large inverter at full output.
Match voltage to the inverter, and confirm the battery appears on the inverter maker's supported list. Closed-loop communication lets the inverter respect the battery's real charge limits instead of guessing.
Read the warranty in full: lithium warranties are stated as a term plus either a cycle count or a total energy throughput, and whichever limit arrives first ends the cover.
Leave room to expand. Packs that parallel cleanly let you add capacity later; ones that do not force a full replacement.

Where buyers lose money

Ignoring the charge current limit and pairing a large array with a small bank, which trips protection and shortens life.
Mixing old and new batteries, or different chemistries, in one bank. The weakest unit drags the whole bank down and can be damaged by the others.
Sizing the bank for total daily consumption rather than after-dark consumption, which typically doubles the cost for no benefit.

Price and availability

Rolls 4500 Series is listed at £ 488 (GBP). Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.

SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in your country: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports Rolls Battery locally before ordering.

Rolls 4500 Series — frequently asked questions

How much does Rolls 4500 Series cost?

Rolls 4500 Series is listed at £ 488 (GBP). The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.

What are the specifications of Rolls 4500 Series?

We hold 5 published specifications for this battery, including system battery voltage 2V, storage capacity (C100) 1408Ah, storage capacity (C20) 1040Ah, storage capacity (C10) 830Ah and weight (kg) 42. The full table is on this page, listed under model RB-S2-L16-EX.

Who makes Rolls 4500 Series?

Rolls 4500 Series is a Rolls Battery product, listed under batteries with model reference RB-S2-L16-EX. The Rolls Battery brand page lists the rest of its range so you can compare across the catalogue.

Is Rolls 4500 Series right for my system?

That depends on what it has to connect to. For a battery, check usable capacity after depth of discharge — LiFePO4 typically allows 80–100%, lead-acid closer to 50%, system voltage: 12 V, 24 V and 48 V for low-voltage packs, or a high-voltage stack and continuous charge and discharge current, which limits how much power you can draw from the pack against the rest of your equipment before price enters the decision. Size from your evening consumption. Add up what actually runs after sunset for the hours you want covered, then divide by the usable capacity per unit — that number, not the array size, sets how many batteries you need.

Where can I buy Rolls 4500 Series?

SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer — buying in-channel is what keeps the manufacturer's warranty valid.

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