RHC1520 Hybrid Layer Capacitor
RHC1520 is suitable for smaller ER battery packs where the device needs pulse support but has stricter space limits than RHC1530 or RHC1550 designs.
| Model | RHC1520 |
|---|---|
| Type | Hybrid Layer Capacitor, hybrid pulse capacitor, HLC/HPC capacitor |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 200As / 55mAh when charged to 3.67V; 380As / 100mAh when charged to 3.95V |
| Maximum Continuous Current | 500mA |
| Maximum Pulse Current | 2000mA |
| Discharge Operating Temperature | -40C to +85C |
| Maximum Charge Voltage / Current | 4.2V / 100mA |
| Charge Operating Temperature | -10C to +70C |
| Impedance | Max 150mohm |
| Dimensions | Max diameter 15.0mm x 20.5mm |
| Cycle Life | 3000 cycles under stated 20mA charge/discharge test condition |
Custom ER battery pack with RHC1520 capacitor for smart meters, GPS trackers, IoT sensors, AMR/AMI and remote telemetry devices
VTCBATT can support cell selection, capacitor pairing and pack-level customization for engineering projects.
ER battery + capacitor solution
The ER battery + capacitor solution combines a high-energy Li-SOCl₂ battery with a high-power hybrid capacitor to achieve both long service life and strong pulse capability. The ER battery provides continuous low-current energy for long-term operation, while the capacitor supplies short-duration high-current pulses during wireless transmission, data communication, or system activation.
- High energy density with long shelf life
- Strong pulse current output
- Reduced voltage drop during peak loads
- Improved performance against passivation effects
- Extended battery service life
- Reliable operation for IoT sensors, smart meters, tracking devices, and remote monitoring systems
This hybrid design is ideal for applications that require ultra-low standby power and occasional high-current pulses.
How RHC1520 behaves during standby, wake-up and recharge
The RHC1520 works together with the Li-SOCl₂ ER battery to manage different power demands.
- Standby: During low-power standby, the ER battery supplies the small continuous current, while the RHC1520 remains charged and ready for pulse support.
- Wake-up: When the device wakes up and requires a high current pulse, the RHC1520 quickly releases stored energy to support the load, reducing voltage drop and protecting the ER battery from sudden current stress.
- Recharge: After the pulse event, the ER battery slowly recharges the RHC1520 through a controlled current flow, preparing it for the next high-power demand.
This operation allows the system to combine the long lifetime of Li-SOCl₂ batteries with the fast pulse capability of a hybrid capacitor.
Safety and Reliability of the ER + RHC1520 Power Structure
The ER + RHC1520 solution uses the capacitor as a controlled pulse energy buffer, not as a way to convert the Li-SOCl₂ primary battery into a rechargeable battery.
No rechargeable cycle inside the ER cell
The Li-SOCl₂ ER battery remains a primary energy source, providing long-term low-current power while gradually recharging the capacitor after pulse events.
Reduced charging risk
The RHC1520 only stores and releases limited pulse energy. Proper system design prevents users from treating the ER battery as a rechargeable battery pack.
Reliable performance in harsh environments
With a wide operating temperature range of -40°C to +85°C, the RHC1520 supports demanding applications such as outdoor meters, oil and gas monitoring, and remote telemetry systems.
Improved system stability
The capacitor reduces pulse stress on the ER battery, helping maintain stable voltage output and extending overall system reliability.
Full Certification & Extended Warranty
VTCBATT Li-SOCl2 batteries meet global certifications including CB, CE, UL, and UN38.3, and offer a 14-month warranty—two months longer than standard—to maximize customer confidence and profit.
VTCBATT Li-SOCl2 battery with RHC1520 passed all the major global certifications, such as CB, CE, EN61000,IEC62133,MSDS.UN38.3,ROHS,UL,BIS,KC Certification,which makes your product more competitive.
Compared to a normal 12-month warranty, VTCBATT Li-SOCl2 batteries with RHC1520 have 14-month warranty and two extra months for shipping and customs clearance ,which ensure the customer’s profit.
VTCBATT Production and Service
To meet the diverse demands of different customers,VTCBATT is noly only devoted to precise and standardized manufacturing in every process to ensure the highest-quality batteries, but also focuses on customized design and excellent service. By providing comprehensive support from pre-sales to after-sale ,VTCBATT cares customers’ feedback to establish long-term and win-win cooperation. Fast assistance and professional battery proposals are the core principle of our professional sales and technical engineers team.
From the raw materials mixing to the cell test, VTCBATT adopts an automatic manufacturing process to maximize production efficiency and enhance the batteries
quality, safety, and reliability. The entire manufacturing process is monitored and 100% tested before flowing to the next procedure to ensure zero defects before delivery.
Over the past 20 years, VTCBATT has built strong partnerships with customers in more than 50 countries worldwide. With reliable quality, responsive service, and tailored battery solutions, we have earned the trust of our clients—many of whom have maintained long-term cooperation and lasting friendships with us for over a decade. Together, we continue to grow and move forward toward a brighter future.
RHC1520 application range for Oil & Gas Sensor, Marine Sensor, Asset Tracker
Small RHC1520 helps asset trackers wake for GPS or cellular updates after long sleep periods.
RHC1520 enables compact container trackers to transmit location data after long storage or shipping intervals.
RHC1520 helps fleet trackers handle GPS startup and wireless uploads during low-duty-cycle operation in vehicles.
RHC1520 supports short transmission bursts in gas meters without forcing ER cells into high-current discharge.
RHC1520 provides pulse current for LoRa sensor transmissions while ER battery recharges it slowly afterwards.
RHC1520 supports marine sensors needing compact pulse power for periodic wireless data reporting offshore systems.
RHC1520 buffers telemetry pulses for oil and gas sensors installed in remote outdoor monitoring sites.
Compact RHC1520 buffers wireless upload and valve pulses while ER battery supports long standby life.
It is a compact Hybrid Layer Capacitor used as a pulse power buffer in small Li-SOCl2 ER battery systems.
RHC1520 has a shorter 20.5mm body and lower confirmed pulse current than RHC1550, making it better for compact designs.
Yes, when the pulse current, duration and life target match the RHC1520 specification and pack design.
ER passivation support
How RHC1520 helps with ER battery passivation
Li-SOCl2 ER cells form a lithium chloride layer on the lithium anode during storage. This passivation layer is useful because it helps lower self-discharge, but it can also increase initial resistance when a device suddenly demands high current.
Without a pulse buffer, a long-stored ER cell may be asked to deliver a 500mA to 2A startup pulse directly. That can create voltage sag, longer activation time, communication failure or MCU reset. With RHC1520, the capacitor supplies the first pulse while the ER cell recovers and recharges the capacitor more gradually.
| ER storage effect | LiCl passivation layer helps reduce self-discharge. |
|---|---|
| Direct high-current risk | Voltage drop, slow activation, communication failure or reset. |
| RHC1520 role | Supplies the initial pulse and reduces instant stress on the ER cell. |
| System result | Better cold start behavior and more stable wireless communication. |
Technical comparison
ER single-cell supply vs ER + RHC1520 design
For smart meter and IoT terminals, the RHC hybrid capacitor improves pulse stability without changing the role of the primary ER battery.
| Item | ER Battery Only | ER + RHC1520 |
|---|---|---|
| Service life | 10+ years in suitable low-current designs | 10+ years in suitable low-current designs |
| Pulse capability | Usually limited to tens or hundreds of mA, often below 200-300mA for demanding pulses | Can support 2A to 5A+ pulse events when properly designed |
| GPS / 4G support | Difficult under heavy pulse load | Practical with correct capacitor and pack design |
| Voltage delay / passivation | High load after idle storage may cause voltage sag | RHC directly discharges for the pulse and reduces voltage delay impact |
| Low-temperature startup | Moderate | Improved pulse stability |
| System stability | Medium under RF burst loads | High for smart meters, ETC tags, GPS trackers and industrial sensors |
Send your RHC1520 pulse profile
Share device type, pulse current, pulse duration, standby current, transmission frequency, target lifetime, connector, temperature and space limit.
Recommended inquiry fields
- Device type and battery compartment size
- Pulse current and pulse duration
- Standby current and upload frequency
- Target life and annual quantity
