BS Charger BS20 - User Manual

Questions and Answers

R
robert91Jul 31, 2025
Why is my BS Charger Battery Charger showing no charging current?
- M
  Michael HoganJul 31, 2025
  If your BS Charger Battery Charger isn't providing any charging current, several factors could be at play. The battery might be severely sulphated, in which case you should check its condition and age. Alternatively, the battery could have a damaged cell, suggesting it may need replacement. Another possibility is that the charger has entered overheat protection mode; try moving both the battery and charger to a cooler environment.
M
Michael ClarkAug 10, 2025
What to do if my BS Charger Battery Charger has a long charging time and the full light doesn't come on?
- T
  Tom YoungAug 10, 2025
  If your BS Charger Battery Charger is taking a long time to charge and the 'Full' light isn't turning on, it could be due to a couple of reasons. Firstly, the battery capacity might be too large for the charger's specifications, so verify that they match. Secondly, the battery itself might be defective, meaning it can't be charged and needs to be replaced.
S
sherrilopezAug 19, 2025
What to do if my BS Charger Battery Charger has no DC output?
- K
  Kristine WilsonAug 20, 2025
  If your BS Charger Battery Charger has no DC output, there could be a couple of reasons. One possibility is that the output is short-circuited. In this case, check the DC connection between the charger and the battery to ensure they are not short-circuiting. Another reason could be a reverse polarity connection to the battery. Verify that the crocodile clips or ring terminals are connected with the correct polarity.

Summary

IMPORTANT SAFETY INSTRUCTIONS

WARNING

Essential warnings for safe operation and potential hazards.

MAIN FEATURES

Highlights key features like microprocessor control and multi-stage charging.

TEMPERATURE & SAFETY PROTECTION

Details internal protections like overheat and overload safeguards.

BATTERY TYPES & CAPACITY

ELECTRICAL PARTS

Lists included electrical components like AC power cord and output leads.

ENVIRONMENTAL CHARACTERISTICS

Defines operating temperature and humidity ranges for the charger.

TECHNICAL SPECIFICATIONS

Provides technical data such as voltage, current, size, weight, and approvals.

CHARGING INSTRUCTIONS

STEP 1 - Pre Charge Check & Electrolyte Level Check

Guide on checking battery electrolyte levels and voltage output settings.

STEP 2 - Connecting the Battery charger to your Battery

Instructions for connecting the charger to the battery, in or out of the vehicle.

STEP 3 - Connect the battery charger to Mains Power (240 Vac)

Instructions for connecting the charger to a 240VAC power source.

THE CHARGING PROCESS

Details the different charging modes and their stages.

NORMAL CHARGING MODE

Explains the three stages of normal charging: Bulk, Absorption, and Float.

MANUAL BATTERY RECOVERY MODE

Details the 4 stages of manual recovery, including 24hr mode and sulphation removal.

STEP 4 - Disconnecting the Battery charger from Battery

Procedures for safely disconnecting the charger from the battery and power.

LED STATUS INDICATOR TABLE

CHARGING CURVE (VOLTAGE)

Visual representation of the voltage and current stages during the charging process.

TROUBLE SHOOTING

Provides solutions for common problems encountered with the charger.

Charger does not work?

Troubleshooting steps for when the charger fails to operate or show indicators.

Charger has no DC output?

Addresses issues where the charger has no DC output despite being powered.

No Charging Current?

Solutions for when no charging current is detected during operation.

Long charging time, Full light does not come on?

Explains potential causes and solutions for extended charging times.

MAINTENANCE

Information on the charger being maintenance-free and cleaning instructions.

BS Charger BS20 Specifications

General

Input	100-240V AC, 50/60Hz
Output Voltage	5V
Charging Port	USB-A
Compatibility	Smartphones, Tablets, and other USB-powered devices
Protection Features	Over-current protection, Over-voltage protection, Short-circuit protection