---
product_id: 564532599
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! Keeps items charged without damaging overcharge. ETL certified."
brand: "broadway limited"
price: "S$80"
currency: SGD
in_stock: true
reviews_count: 5
category: "Broadway Limited"
url: https://www.desertcart.sg/products/564532599-charge-o-matic-the-timer-that-makes-any-charger-smart
store_origin: SG
region: Singapore
---

# 99h max ON timer 99d OFF cycle repeat Prevents battery overcharge 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! Keeps items charged without damaging overcharge. ETL certified.

**Brand:** broadway limited
**Price:** S$80
**Availability:** ✅ In Stock

## Summary

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

## 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! Keeps items charged without damaging overcharge. ETL certified. by broadway limited
- **How much does it cost?** S$80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/564532599-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

- • **Backup Memory Power:** Retains your custom settings even during power outages—no reprogramming required.
- • **Battery Health Guardian:** Protects your batteries from overcharging damage, extending their lifespan and reliability.
- • **Energy & Cost Efficient:** Cuts phantom power drain by cycling chargers off when not needed, lowering your electric bills.
- • **Universal Compatibility:** Works seamlessly with any charger or device, from power tools to electric start generators.
- • **Set & Forget Smart Charging:** Effortlessly automate charging cycles up to 99 hours ON and 99 days OFF—no manual intervention needed.

## Overview

Charge-O-Matic is an ETL-certified smart timer that transforms any charger into an intelligent device by enabling programmable power cycles up to 99 hours ON and 99 days OFF. Designed to prevent battery overcharge and extend battery life, it supports all devices requiring periodic charging, including electric start generator batteries. With a simple dial interface and backup memory, it offers effortless, reliable automation that saves energy and protects your investments.

## Description

The Charge-O-MaticTM is a simple to use device that solves the age-old problem of powering and/or charging devices that need to be periodically charged or powered for several hours, but then need to remain unpowered for many days to avoid overcharging and damaging batteries. Example use cases include electric start backup generator batteries, electronic devices that are infrequently used, power tools and more. There have been many commercially available timers on the market, but typically these devices are limited to an powered-on duration of only 24 hours, at an interval period of 7 days. The Charge-O-MaticTM allows powered-on durations of much longer, up to 99 hours–at intervals of anywhere between 1 and 99 days. For example: Generator producer Generac explains on their website, “The customer should charge the battery at least once a month for 24-48 hours in preparation for usage... The charger should be connected for no longer than 48 hours.” Most customers do not remember to charge and unplug their generator batteries monthly. Inevitably, they leave the batteries connected to the charger indefinitely, damaging the battery, and leaving them with a dead battery when it is time to use the generator. With the generator’s charging cord plugged into the Charge-O-MaticTM, the customer could set the Powered On Duration period to 48 hours and the Days Between On Cycle to 30 days. The timer would then power-on for 48 hours and then power itself off for 30 days, at which point it would again power-on for 48 hours, and then again power off for 30 days and so on, indefinitely. No more remembering to plug and unplug devices. While this is one use-case, the Charge-O-MaticTM can be used for any device that would benefit from power cycles at intervals.

Review: 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!
Review: I am impressed. I had bought this for my aunt to charge her scooter then she sold it so I am now using it to run two chargers for batteries. Easy to set up, and works perfectly. Batteries no longer are getting constantly baked by the chargers.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C4V84N74 |
| Batteries required | No |
| Customer Reviews | 4.6 4.6 out of 5 stars (111) |
| Date First Available | 28 September 2023 |
| Item model number | Charge-O-Matic |
| Number of pieces | 1 |
| Product Dimensions | 6.99 x 7.95 x 10.49 cm; 240 g |

## Product Details

- **Brand:** Broadway Limited
- **Colour:** White
- **Item dimensions L x W x H:** 7 x 8 x 10.5 centimeters
- **Plug type:** 2-Pin
- **UPC:** 836563007954

## 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! Keeps items charged without damaging overcharge. ETL certified. - Image 1](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! Keeps items charged without damaging overcharge. ETL certified. - Image 2](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! Keeps items charged without damaging overcharge. ETL certified. - Image 3](https://m.media-amazon.com/images/I/81oRROSeRiL.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! Keeps items charged without damaging overcharge. ETL certified. - Image 4](https://m.media-amazon.com/images/I/912uXi1BaTL.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! Keeps items charged without damaging overcharge. ETL certified. - Image 5](https://m.media-amazon.com/images/I/91N8vD+tTCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*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!

### ⭐⭐⭐⭐⭐ Review
*by J***S on 19 July 2025*

I am impressed. I had bought this for my aunt to charge her scooter then she sold it so I am now using it to run two chargers for batteries. Easy to set up, and works perfectly. Batteries no longer are getting constantly baked by the chargers.

### ⭐⭐⭐⭐⭐ Review
*by J***N on 30 May 2025*

This timer is wonderful. I use it for my Mobility Scooter. It is not good to leave the scooter on charge all the time. Batteries go bad. Now, I use this timer! I put charge time for a 14 hour charge, every 20 days. This works well when not in use. You can start a 14 hour charge, anytime you want to, if needed.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/564532599-charge-o-matic-the-timer-that-makes-any-charger-smart](https://www.desertcart.sg/products/564532599-charge-o-matic-the-timer-that-makes-any-charger-smart)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-07*