Votronic LCD Battery Computer 100 S
How much charge is really left in the leisure battery? The Votronic LCD Battery Computer 100 S measures voltage, current and charge continuously, up to 100A.
Characteristics
- Measuring shunt: 100A (up to 200A peak)
- Supported voltage: 12V and 24V
- Compatibility: Lead-acid, Gel, AGM, LiFePO4 lithium
- Battery capacity: 50 to 2000 Ah (adjustable)
- Precision 100A shunt, LCD screen, optional Bluetooth
Detailed overview: Votronic 100A shunt battery monitor
The Votronic LCD Battery Computer 100 S is a battery monitor designed to precisely track the state of charge of a leisure battery in a converted van, RV, boat or fixed solar setup. Unlike a simple voltmeter, it continuously measures voltage and incoming/outgoing current, and calculates the battery's real state of charge using a precision shunt fitted on the negative terminal.
The supplied shunt, rated at 100A continuous (up to 150A for 15 minutes and 200A for 7 minutes at peak), offers fine measurement resolution (0.1A and 0.1V), noticeably more accurate than its predecessor. The backlit LCD display simultaneously shows the main battery voltage, the voltage of a second battery, such as the starter battery, the charge or discharge current, and the remaining capacity in amp-hours and percentage, working like a fuel gauge for the battery.
Compatible with wet lead-acid, Gel, AGM and LiFePO4 lithium batteries (adjustable capacity from 50 to 2000 Ah), the unit works in both 12V and 24V. A programmable switching output (PNP, 0.5A max) can automatically cut power to consumers below a set charge threshold, protecting the battery from deep discharge, with a NOT-ON function to briefly restore power at the touch of a button.
For remote monitoring, an optional Bluetooth Connector S-BC module lets you check the charge and discharge history from the Votronic Energy Monitor app. Compact (3.15 x 3.35 x 0.94 in / 80 x 85 x 24 mm, with a mounting depth of just 0.87 in / 22 mm) and light (10.4 oz / 295 g), the LCD Battery Computer 100 S is easy to fit on a dashboard or technical panel. For anyone who wants to genuinely know how much is left in their leisure battery, rather than guess, this Votronic monitor remains a reliable reference among van and RV installers.
EAN: 4250683614728
Comparison
How does the Votronic LCD Battery Computer 100 S compare to other battery monitors for vans and RVs, a comparison many owners search before choosing a brand?
| Criterion | Votronic 100 S | Victron SmartShunt 500A | Victron BMV-712 | Renogy Smart Battery Monitor |
|---|---|---|---|---|
| Shunt | 100A | 500A | 500A (included) | 500A |
| Physical display | Yes (LCD) | No (app only) | Yes (colour LCD) | No (app only) |
| Bluetooth | Optional | Built in | Built in | Built in |
| Supported voltages | 12V / 24V | 12V to 48V | 12V / 24V / 48V | 12V / 24V |
| Weight | 10.4 oz (295 g) | ≈ 6.7 oz (190 g) | ≈ 10.6 oz (300 g) | ≈ 7.8 oz (220 g) |
The Votronic 100 S stands out for its physical display, always visible without a phone, a real plus for a quick check day to day. The Victron SmartShunt and BMV-712, as well as the Renogy, lean more on native Bluetooth and a richer app, at the cost of an oversized shunt (500A) for most van and RV uses. For a direct, reliable readout without depending on an app, the Votronic 100 S remains a sensible and affordable choice.
Related video
Video: Votronic 100 S Batteriecomputer | VW T4 Camper Ausbau #21 - Published on 13/05/2018
Our tester's review: Gilles Caron
Fitted in a converted van with a 200 Ah LiFePO4 leisure battery, the Votronic LCD Battery Computer 100 S quickly replaced our rough voltmeter guesswork. The shunt wires onto the battery's negative terminal, the display sits on the technical panel, and after a first full charge to calibrate the unit, the percentage and amp-hour readout genuinely matches reality. Handy day to day: a quick glance tells you whether there is enough left to get through the night without needing to recharge. The backlit screen stays readable in bright sun and in the dark, and dialling in the right battery profile (LiFePO4 in our case) takes only a few minutes. The one regret: Bluetooth is not built in, you need the optional module to get the app and charge history, which adds to the bill. The measurement resolution is also a notch below a high-end Victron SmartShunt. For reliable monitoring and genuine control over your battery's runtime, this Votronic monitor clearly does the job.
Frequently asked questions: Votronic 100A shunt battery monitor
Yes, alongside lead-acid, Gel and AGM batteries, it has a dedicated setting for LiFePO4 lithium batteries, with an adjustable capacity from 50 to 2000 Ah.
The shunt measures continuously up to 100A (120A with good cooling), with peaks of up to 150A for 15 minutes and 200A for 7 minutes, at a resolution of 0.1A.
Not natively. An optional Bluetooth Connector S-BC module, sold separately, lets you track charging and history from the Votronic Energy Monitor app.
Yes. Alongside the main battery, it displays the voltage of a second battery, such as the starter battery, from 7 to 32V, at a resolution of 0.1V.
Other products in the "Battery monitors" category
Renogy RBM500
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The Renogy RBM500 continuously tracks voltage, current and state of charge through a 500A shunt and a wired LCD display, accurate to within 1%.
Victron Energy SmartShunt 500A/50mV IP65
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The Victron SmartShunt 500A/50mV IP65 tracks battery status continuously and sends it all over Bluetooth to the VictronConnect app, no physical display needed.
Published on 04/09/2026