ER primary lithium cells
ER series Li-SOCl₂ cells, supplied as bare cells or assembled with tabs, wire leads and connectors to match your board or housing.
View ER seriesLi-SOCl₂ · ER Series · Custom Battery Packs
Custom Li-SOCl₂ Batteries & Battery Packs for Industrial Devices
From ER primary lithium cells to custom battery packs and ER + pulse capacitor solutions, BELICELL supports your project from battery selection and prototyping to production.
Engineering proposal and drawing: usually same day, at the latest within two days, subject to complete technical information.
What we make
Three ways we support your power design
Custom battery packs
Series, parallel and series-parallel packs built to your voltage, capacity, space and connection requirements, with drawings confirmed by our engineers before production.
Custom battery packsER + pulse capacitor
Hybrid power for devices with RF transmission or other short high-current pulses, selected against your working current, peak current, pulse duration, pulse frequency and cut-off voltage.
ER + pulse capacitor solutionsModels
ER series cells
Each model is listed with its specifications, connection options and the way to request a datasheet. Where a value depends on test conditions, the condition is stated with it.
ER14250
ER14250 Li-SOCl₂ Battery
Part of the BELICELL ER series of Li-SOCl₂ primary lithium cells, supplied as a bare cell or assembled with tabs, wire leads or a…
View modelER14505
ER14505 Li-SOCl₂ Battery
Part of the BELICELL ER series of Li-SOCl₂ primary lithium cells, supplied as a bare cell or assembled with tabs, wire leads or a…
View modelER18505
ER18505 Li-SOCl₂ Battery
Part of the BELICELL ER series of Li-SOCl₂ primary lithium cells, supplied as a bare cell or assembled with tabs, wire leads or a…
View modelER26500
ER26500 Li-SOCl₂ Battery
Part of the BELICELL ER series of Li-SOCl₂ primary lithium cells, supplied as a bare cell or assembled with tabs, wire leads or a…
View modelER34615
ER34615 Li-SOCl₂ Battery
Part of the BELICELL ER series of Li-SOCl₂ primary lithium cells, supplied as a bare cell or assembled with tabs, wire leads or a…
View modelHow we work
Why engineers send us their requirements
Selection based on your load, not only on a model number
We review working current, peak current, pulse duration, pulse frequency, cut-off voltage, temperature and space before recommending a cell or a pack. A model number alone is not enough for a pulse application.
A confirmed drawing before production
Our engineers confirm the cell selection, series/parallel structure, tabs, wire leads and connector, then issue the drawing. With complete technical information this is usually same day and at the latest within two days.
From a paid sample to batch production
Samples are charged and carry no minimum order quantity, with freight paid by the customer. MOQ and lead time are confirmed for each configuration and each quantity, in the quotation.
Inspected before it leaves
Every shipment is checked for voltage, appearance and dimensions, and a pre-shipment inspection report is provided. Quality issues within one year of purchase are handled by BELICELL.
Applications
Batteries for devices that must run unattended
Li-SOCl₂ batteries for agricultural IoT devices
Sealed field devices, wide temperature range and scheduled reporting: capacity and pulse behaviour both have to be confirmed before a model is chosen.
How we approach itLi-SOCl₂ batteries for IoT and wireless sensors
Low standing load, sharp transmission pulses: the configuration follows the pulse the radio produces, not the radio's name.
How we approach itLi-SOCl₂ batteries for smart metering
Long standing time plus periodic transmission pulses: metering devices need a cell chosen against both halves of the load profile.
How we approach itLi-SOCl₂ batteries for asset tracking devices
Sleep current, reporting interval and the peak of a position fix decide the pack; nominal capacity alone does not.
How we approach itLi-SOCl₂ batteries for industrial monitoring terminals
A sealed terminal lives or dies by the balance between its standing current and its periodic bursts, so the duty cycle comes before the…
How we approach itLi-SOCl₂ batteries for e-paper displays
Long idle periods followed by a short update pulse: the rest period, the update current and the temperature decide whether one cell is enough.
How we approach itProcess
What happens after you contact us
Inquiry
You send a model number or describe the application.
Requirements review
We confirm the delivery form: bare cell, tabs, connector, pack, or ER + capacitor.
Engineering proposal
Our engineers propose the configuration and issue a drawing.
Sample evaluation
You test a charged sample against your device.
Quotation
The quotation follows the confirmed technical solution: PO, PI and payment.
Production and inspection
Production, then voltage, appearance and dimension checks.
Delivery and support
Shipment with the inspection report, and support through the project cycle.
The facts you need before you write
1 hour
Reply during working hours, Mon–Fri 8:30–18:00; within 24 hours outside them
Charged sample
No minimum order quantity for samples; freight paid by the customer; sample lead time confirmed per project
On inquiry
Batch MOQ is confirmed for each configuration
Per project
Production lead time, confirmed in the quotation
MOQ and lead times depend on the configuration and the quantity, and are confirmed in the quotation for each order.
Questions
Common questions from design engineers
Do I need a pulse capacitor for an RF device?
It depends on the working current, peak current, pulse duration, frequency and your device's cut-off voltage. Many wireless devices benefit from a hybrid ER + HPC configuration, but the combination has to be evaluated against those parameters rather than assumed.
Can you supply a pack with a specific connector and wire length?
Yes. Tabs, wire leads, connectors and series/parallel structures are all specified per project and confirmed on the drawing before production.
What do you need from me to quote?
The model or application, the delivery form, quantity, and the load conditions if the device has pulse requirements. The quotation follows the confirmed technical solution.
Tell us your battery model or your application requirements
Four fields are enough to start: your name, work email, the model or application, and a short description of what you need.