---
product_id: 565301385
title: "Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified."
brand: "broadway limited"
price: "€ 0.17"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.be/products/565301385-charge-o-matic-the-timer-that-makes-any-charger-smart
store_origin: BE
region: Belgium
---

# 99 hrs max ON time 99 days OFF cycle Backup battery saves settings Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified.

**Brand:** broadway limited
**Price:** € 0.17
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Charge smarter, not harder—never overcharge again!

## Quick Answers

- **What is this?** Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified. by broadway limited
- **How much does it cost?** € 0.17 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/565301385-charge-o-matic-the-timer-that-makes-any-charger-smart)

## Best For

- broadway limited enthusiasts

## Why This Product

- Trusted broadway limited brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Outage Proof:** Built-in backup battery preserves your timer settings even during unexpected blackouts.
- • **Set It & Forget It:** Automate charging cycles up to 99 hours ON and 99 days OFF—no more guesswork or overcharging.
- • **ETL Certified Safety:** Meets rigorous UL standards for reliable, safe operation you can trust.
- • **Multi-Device Control:** Use with power strips to effortlessly manage multiple devices on your schedule.
- • **Universal Compatibility:** Works seamlessly with any charger or device, from electric start generators to USB gadgets.

## Overview

The Charge-O-Matic is a versatile digital timer that transforms any charger into a smart device by enabling programmable power cycles up to 99 hours ON and 99 days OFF. Designed to prevent battery damage from overcharging, it features a backup battery to retain settings during outages and is ETL certified for safety. Ideal for electric start generators, power tools, and USB devices, it offers professional-grade automation that frees you from manual charging routines.

## Description

Product Description It's Not Random. Your Barely-Used Devices Aren't Failing By Chance The fastest way to ruin a battery is leaving it on the charger 24/7. Most people don't know this. Their jump starter sits on the trickle charger for a year. Their power station never gets unplugged. Their mobility scooter charges every night even when it isn't ridden. Two years later the battery is dead and they blame the manufacturer. The real cause is the charger. Charge-O-Matic fixes the failure mode by cutting power between charge cycles. Two dials. No app. No Wi-Fi. The cell rests, the voltage drops, and the battery lasts. A $40 device that protects a $3,000 mobility scooter battery, a $1,500 power station, a $200 jump starter, or every battery in your emergency kit. Why Devices Die When You're Not Using Them Modern chargers prevent overcharging. They don't prevent this. The battery management system stops the cell from going above 4.2 volts. That part works. But once the cell hits 4.2, the BMS holds it there indefinitely. That's the problem. At 4.2 volts the cathode oxidizes the electrolyte and the anode keeps growing its SEI layer. Both consume active lithium silently while the device sits on the shelf. Aging rate at 100% charge is roughly 5x the rate at moderate charge. The charger also pumps heat into the cell, raising cell temperature 5 to 15 degrees above ambient, which doubles the aging again. That's why a jump starter that lived on the trickle charger won't hold a charge. The charger was doing its job. The job just isn't what people think. Charge-O-Matic stops the damage by cycling power: charge for the hours you need, rest for the days you don't. The cell self-discharges off peak voltage, cools to ambient, and stays in the chemistry sweet spot. Two Dials. No App. No Wi-Fi. Set it once. Walk away. Charge-O-Matic plugs into any standard outlet. Your charger plugs into Charge-O-Matic. Set the dials and it cycles automatically, indefinitely. It replaces the part of your brain that was supposed to remember to charge things. No more "I forgot." No more dead-on-arrival emergency gear. No app. No Wi-Fi. No subscription. No firmware updates. No batteries to replace. Built to Last Patented (US 11,610,749). ETL, UL, and CSA certified to UL 60730 safety standards. Featured by Linus Tech Tips on YouTube in their March 2024 Handy Tech Under $100 video. Non-volatile memory holds your settings without an internal battery, so the cycle resumes automatically after a power outage of any length. How It Works Set hours ON (up to 99 consecutive hours) Set days OFF (up to 99 days between cycles) Plug in any standard charger Cycles repeat indefinitely—no resetting Resumes after a power outage Charge-O-Matic Specifications The Other Way Batteries Die. Some batteries don't die from being on the charger. They die from being off it too long. Boat batteries with bilge pumps. RV batteries with always-on circuits. Vehicles with standby electronics. Power banks sitting in drawers. Each of these draws current 24/7 even when nothing is being used. The cell voltage slowly drifts down. Drop below about 2.5 volts and copper dissolution starts. The cell is then permanently damaged regardless of what you do next. Charge-O-Matic handles this with the same two dials. Set it to cycle on every 14 to 30 days for a few hours. The battery gets topped off automatically before the cell drops to the danger zone. One device. Two failure modes. One fix. Suggested cadences: cordless tool batteries, 2 hours every 3 to 4 weeks. Jump starters and power banks, 2 hours every 14 days. Boat batteries with parasitic loads, 48 hours every 14 days. Mobility scooter and golf cart batteries, 4 hours every 14 to 30 days. Generator batteries, 2 to 4 hours every 30 days. Whatever your manufacturer recommends, you can dial it in.

Review: Minimum 1 hour each cycle - I onlybwant 10 minute charges ever 90 days but the minimum is 1 hour so its a waste of power & over charges my items
Review: Timer - Timer works great but when it turns off to the time you have it set for it won't turn on until a hour or so later. Example had the timer to shut off at 1 pm ,3 days later when I had it set to come back on it turned on at 3 pm and not at 1 pm when I wanted it to

## Features

- The timer that makes ANY charger smart.
- Power on for up to 99 hours consecutively
- Cycle OFF for up to 99 days before automatically powering back ON...repeats indefinitely!
- Backup battery saves settings in case of power outage
- Keeps items charged without damaging overcharge.Works perfectly with ANY device requiring charge at a repeating interval of many days. SET IT AND FORGET IT!.Automatically charge Electric Start Generator batteries to manufacturer spec, WITH NO ONGOING INTERVENTION.Use with power strip to control multiple devices.Perfect for Electric Start Generators, USB charged devices, Battery powered tools and more!.Intertek ETL Certified. Meets UL 60730-1:2016 Ed.5; UL 60730-2-7:2014 Ed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C4V84N74 |
| Best Sellers Rank | 1,139,364 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,129 in Timers |
| Brand | Broadway Limited |
| Brand Name | Broadway Limited |
| Colour | White |
| Customer Reviews | 4.6 out of 5 stars 123 Reviews |
| Item Dimensions | 7 x 8 x 10.5 centimetres |
| Item Type Name | Digital Timer Controller |
| Item dimensions L x W x H | 7 x 8 x 10.5 centimetres |
| Manufacturer | Broadway Limited |
| Manufacturer Part Number | 795 |
| Model Number | Charge-O-Matic |
| Number of Items | 1 |
| Output Voltage | 5 Volts (DC) |
| Output voltage | 5 Volts (DC) |
| Plug Type | 2-Pin |
| Plug type | 2-Pin |
| UPC | 836563007954 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** Broadway Limited
- **Colour:** White
- **Item dimensions L x W x H:** 7 x 8 x 10.5 centimetres
- **Output voltage:** 5 Volts (DC)
- **Plug type:** 2-Pin

## Images

![Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified. - Image 1](https://m.media-amazon.com/images/I/81QownxEO1L.jpg)
![Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified. - Image 2](https://m.media-amazon.com/images/I/81HOe+xHagL.jpg)
![Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified. - Image 3](https://m.media-amazon.com/images/I/91OG+PiBIjL.jpg)
![Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified. - Image 4](https://m.media-amazon.com/images/I/91mmqMRsxxL.jpg)
![Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified. - Image 5](https://m.media-amazon.com/images/I/81oRROSeRiL.jpg)

## Customer Reviews

### ⭐ Minimum 1 hour each cycle
*by L***A on 26 January 2026*

I onlybwant 10 minute charges ever 90 days but the minimum is 1 hour so its a waste of power & over charges my items

### ⭐⭐⭐⭐⭐ Timer
*by D***E on 6 June 2026*

Timer works great but when it turns off to the time you have it set for it won't turn on until a hour or so later. Example had the timer to shut off at 1 pm ,3 days later when I had it set to come back on it turned on at 3 pm and not at 1 pm when I wanted it to

### ⭐⭐⭐⭐⭐ No more headaches! No college Degree needed to program it!
*by C***K on 9 May 2024*

These things are HELLLLLA EXPENSIVE.... omg.... you can get digital fancy pants timers like this from ali-express/wish/temu and other chinese retailers, for 7.99... BUT those all need advanced programing degrees to opperate.. X_X seriously, this unit is easy no-brainer. I can 'not touch it' for 4 years, then decide to plug it in some where else, and i don't even need to read a manual to adjust and program this thing! just push the dial in to start editing, roll the dial to the hours i want it ON for. then do the same to the Other dial, to adjust the DAYS i want it OFF for! THIS IS PERFECT FOR MAINTAINING LITHIUM-ION and NMH BATTERIES! Once charged, these batteries should only receive a charge again about once a month or 2. Or if you want a more regular charge cycle because you change out LOTS of batteries regularly, well you can set it for 24h ON, 6 days OFF. and you can change your schedule for it, in like 8 seconds! without reading a stupid manual, or barely even reading the dials! its just EASY to understand out of the blue. come back to it 10 years later? no problem! its self explainitory!! not like these LCD things that are 8bucks and require a degree in electrical engineering to even read the manual for! X_X; I bought 3 of these. One for the car battery bank i keep in the garage, with all its chargers on it that keeps lead acid batteries topped off through the cold winters (12h-on/5d-off). one for my SHELF FULL of lithium ion and NMH based batteries that need to only be freshened up every 2 months (24-on/60d-off), and finally one for my regular every day use batteries (12-on,1d-off) the latter gives 36 hours off, and 12 hours on. which is about my use-level. its currently May of 2024, Electric bill prices will be higher then in recorded history. These things are going to keep all those trickel-energy-hungry transformers for all those chargers, in check, so my electric bills are lower. every stupid power brick you plug in pulls power ALL THE TIME even when you are NOT charging things! Unplug them all when not in use?? that's a chore.. this product does that chore for you. Attach a surge protector to it, so a bunch of sockets are all turning on and off when it does. Cool beans!

## Frequently Bought Together

- Charge-O-Matic - The Timer That Makes Any Charger Smart. Power on for up to 99 Hours, Cycle Off for up to 99 Days, Repeats indefinitely! 30 Day Timer. 60 Day Timer. 90 Day Timer. ETL Certified.
- NOCO Boost Plus GB40 1000A UltraSafe Car Battery Jump Starter, 12V Jump Starter Battery Pack, Battery Booster, Jump Box, Portable Charger and Jumper Cables for 6.0L Gasoline and 3.0L Diesel Engines

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-09*