Skylotec ACX Power Ascender Batteries: Original Batteries vs New High-Capacity Batteries (HCB) Comparison and Key Changes

We have taken the time to put together a few of the recent questions we have been asked about the key differences between the original and new high capacity batteries (HCB) for the Skylotec ACX Power Ascender.

Comparison and key changes:

1. How long does it take to charge the new ACX HCB Battery vs the original battery

The charging time on both batteries is the same. Approximately 90 minutes total from empty to fully charged. However, it’s important to note that the new HCB batteries cannot be used with the old battery charger and requires the new HCB charger – POA-028-UK.

2. What is the Ascent difference when using the old battery vs the new HCB battery

The original battery was capable of 200m of continuous ascent with 100kg of weight. The new HCB battery is far superior and boasts a continuous ascent of 550m with 100kg. However, If you descend or lower a load during this cycle then energy is fed back into the battery and further meters of ascent can be achieved

3. What is the descent difference between the original and new HCB battery?

If the batteries where to be empty then several hundred meters of descent. The HCB is estimated at 3 times further in descent. When fully charged the new HCB can descend the WLL of the machines up to 100m when fully charged. If a greater lowering distance is required, then the battery charge should be reduced to 75% charge or less. This can be achieved by running full speed without load to safely discharge the battery sufficiently. Descending on a fully charged battery was not possible with the original battery, you always had to empty some charge out of it first to create space inside the cells.

4. Is the Working Load Limit - WLL of the ACX different with the new batteries?

The WLL rating for a Skylotec ACX Power Ascender is not dependant on the battery. The WLL is dependant to the marking on the machine label. ACX units manufactured and tested before September 2024 have a WLL of 200kg.

Those ACX units manufactured after September 2024 have a WLL of 220kg. Serial number AX1505R2000 and later have the increased WLL of 220kg. To check this, you can see this indicated on the lifting point of the ACX as seen in the photo below:

5. Does the new HCB battery have a different IP Rating?

No the IP Rating on the new ACX HCB battery  is IP55 as per the original model.

6. Are the new HCB batteries compatible with older ACX models?

The new HCB’s are backwards compatible with all ACX models. Maximum ascent rate remains the same. WLL of the ACX remains the same. Ascent range and descent performance is increased considerably with the new batteries.

7. Lifespan of original ACX battery vs new HCB ACX Battery?

The estimated lifetime is up to 5 years for both battery variants.  This is variable and related to many factors – storage/operating temperatures, frequency of use, frequency/consistency of charging cycles, weights of loads lifted etc. Both batteries have an internal Battery Management System (BMS) which monitors the health of the lithium cells during operation and charging - a safety feature to mitigate the risks associated with powerful lithium cells.

Ready to upgrade or need advice on the right setup for your ACX?

Order the batteries from our webshop.

For expert support and tailored advice email us or call our technical team on 01253767775 Opt 2.

Conclusion:

If you’ve been using the Skylotec ACX Power Ascender for a while, you’ll know it’s one of the most efficient tools for getting you up and down ropes quickly and safely. But now, with the release of the new high-capacity battery and updated charger, things have taken a serious step up.

The biggest improvement is the battery life. The new high-capacity battery can last up to three times longer than the old one. That means you can ascend as much as 550 metres on a single charge with a 100 kg load — way more than before. And if you’re descending with a heavier load, like 200 kg, it can still get you down 100 metres without breaking a sweat. This is a massive benefit for long jobs where swapping out batteries mid-operation is a hassle.

The new battery also includes an improved battery management system that monitors usage and charging, helping to extend its lifespan and performance. Plus, it’s got a handy LED indicator to give you a quick read on charge levels — no more guessing if you’ve got enough juice left.

To match the new battery, there’s also a new charger in the mix. It’s not just a rebrand taking the battery from empty to full in about 90 minutes. It’s designed specifically for the new high-capacity model, so it keeps everything running smoothly and safely.

Durability’s been thought about too. The battery’s IP55 rating means it’s tough enough to handle dust and water spray perfect for harsh outdoor conditions or unpredictable environments.

Overall, if you’re using the ACX regularly for rescue, maintenance, or access work, upgrading to the new battery and charger setup is a no-brainer. You’ll get more runtime, quicker recharges, and better performance all round. It’s one of those upgrades that actually makes your day to day work life easier and more efficient.

Need help choosing the right setup?

We’re here to help you get the safest, most efficient solution for the job. Whether it’s new gear or making better use of what you already have, we’ll point you in the right direction — even if that means recommending something less expensive. If you’ve got any questions, don’t hesitate to get in touch.

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If your site requires access to areas like tanks, silos, tunnels, pits, or culverts—chances are you’re dealing with confined spaces. And when it comes to safety, confined space entry and rescue is one of the most complex, high risk activities on any industrial site.

Whether you're in manufacturing, construction, utilities, renewables, or facilities management, you’re legally required to assess these areas and have the right controls in place. That includes proper confined space risk assessments, site specific rescue plans, and the right training and equipment for your team.

According to the Health and Safety Executive (HSE), confined space fatalities, though less frequent than other incidents, often involve multiple workers when attempted rescues go wrong. The risks such as low oxygen, hazardous gases, limited access can escalate quickly. Without a proper plan, things can spiral fast.

This is where confined space consultancy makes a real difference. We work with businesses across the UK to assess their site to provide suitable and sufficient, entry plans, rescue plans and train for safer confined space entry work. Whether you’re preparing for routine maintenance, emergency response, or a major shutdown.

Our goal is simple: help you stay safe, compliant, confident, and rescue ready.

What Do Health & Safety Leads and Site Managers Ask About Confined Space Safety?

We’re regularly asked questions like these:

Legal and Compliance

• What is the legal definition of a confined space under UK regulations?
• What are the requirements of the Confined Spaces Regulations 1997?
• Do we need a confined space rescue plan for every entry?
• How do we ensure we’re fully compliant?

Risk Assessment and Rescue Planning

• What does a “suitable and sufficient” confined space risk assessment include?
• How do we write a confined space rescue plan that is simple and actually works?
• What emergency procedures should we have for vertical and horizontal entry?
• How often should rescue plans and risk assessments be reviewed?

Confined Space Equipment and Inspection

• What PPE is required for confined space entry?
• Do we need gas detection, BA sets, or escape sets?
• What type of gas monitor do I need?
• Who should inspect our confined space entry and rescue equipment?
• What are the LOLER and PUWER inspection requirements for tripods, winches, and harnesses?

Confined Space Training and Competency

• What level of confined space training do we need?
• Should our team be trained in confined space rescue?
• Can we deliver confined space training on our own site?
• What’s the difference between low risk, medium risk, and high risk confined space entry training?

These are the questions we deal with every day. And at REAX, our job is to give you straightforward answers, expert advice, and practical solutions.

How REAX Supports Your Confined Space Work

Whether you’re starting from scratch or reviewing existing procedures, we offer a full suite of confined space consultancy services to help you manage risk and improve safety.

Confined Space Risk Assessments and Site Audits

Our confined space consultants carry out on-site assessments to help you:

• Identify and categorise confined spaces
• Review your entry procedures and isolation controls
• Ensure your documentation meets current UK legislation
• Identify the right kit, access methods, and rescue options for each space

All assessments are bespoke and built around your site and tasks.

Rescue Plan Development

Every confined space should have a rescue plan that is specific, realistic, and actionable. We’ll help you:

• Develop written rescue strategies for low, medium, and high risk entries
• Plan for vertical retrieval, Breathing Apparatus based rescue, or stretchers and rope systems
• Align with your existing emergency procedures and first responder protocols
• Conduct rescue drills and test your team’s response under controlled conditions

Confined Space Training Delivered On-Site

We deliver nationally recognised confined space training accredited by City & Guilds, CABWI and our own in house qualifications at your location, using our mobile training trailer. This helps reduce costs for travel, accommodation and any logistics issues with getting everyone to our training centre

Courses include:

• Low risk confined space entry training
• Medium risk (Escape Set) confined space training
• High risk (Full Breathing Apparatus) entry and rescue team training
• Bespoke rescue solutions

If you're also involved in rope access or work at height environments, we can integrate training for that too.

Equipment Supply, Inspection and Advice

Not sure what kit you need? Or whether your current setup is suitable and sufficient as well as compliant?

We advise and provide audits of your existing equipment – if it’s fit for purpose, we’ll tell you - there is no point buying equipment if your current equipment fits your needs!

However, if you do need equipment we can provide advice, alternatives and supply of:

• Gas monitors, escape sets, full BA systems
• Rescue tripods, gantries, winches, and retrieval blocks
• Confined space harnesses, lighting, and communications
• Equipment hire, inspection, and servicing in line with LOLER/PUWER

We’ll help you avoid overspending—and we’ll never recommend equipment you don’t need.

Ready to Talk? Book Your Confined Space Consultancy with REAX

If you're looking for expert help with confined space rescue planning, risk assessments, onsite training, or equipment support, REAX is ready to help.

We work with industrial, commercial, and high risk sites across the UK - making sure confined space work is done safely, legally, and confidently.

Get in touch today to book a confined space consultancy call, and we’ll talk you through your setup, challenges, and how we can support your team.

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When it comes to keeping people safe on site, especially in high risk environments, working at height isn't something you can afford to get wrong. Getting it right goes well beyond ticking a few compliance boxes. If your business operates within manufacturing, construction, telecoms, utilities, renewables or industrial maintenance, you already know that the risks are real, so are the legal responsibilities.

According to the latest figures from the Health and Safety Executive (HSE), falls from height were the number one cause of fatal injuries in the workplace for 2023/24, with 50 workers losing their lives. That’s a noticeable increase compared to the previous year. On top of that, falls from height accounted for around 8% of all non-fatal injuries reported under RIDDOR. Making it one of the most common causes of serious incidents on site.

That’s why having proper work at height consultants to support on projects becomes essential. Someone who knows the regulations inside out who can work with you to build a strategy and plan that not only meets with compliance but actually protects people. From making sure you're aligned with the Work at Height Regulations 2005 to helping you plan for emergencies, the right advice and support can make a huge difference.

Whether you’re looking to improve rescue readiness, ensure your Personal Protective Equipment (PPE / PFPE) is up to standard, or bring in tailored training, getting the right guidance now could prevent a serious incident down the line.

Consultancy support for Work at Heights can cover everything from tailored rescue plans to on-site training. And if it's done properly, it can reduce risk, help you stay legally compliant, and create a culture where safety is taken seriously. It also doesn’t need to be complicated!

What Do Health & Safety Leads and Project Managers Usually Ask when it comes to Work at Height?

If you're responsible for safety on site, chances are you've asked one or more of the following:

General Safety and Compliance

• What defines 'work at height' under UK regulations?
• What are the legal requirements for working at height in the UK?
• What is the hierarchy of fall protection?
• What are the main hazards associated with working at height?

Risk Assessment and Planning

• What does a comprehensive height safety risk assessment include?
• How do we develop a compliant rescue strategy for our site?
• What factors should be considered in a work at height rescue plan?
• How often should risk assessments be reviewed or updated?

Equipment and Inspection

• Who is qualified to inspect PPE and rescue equipment under LOLER and PUWER?
• What is the difference between fall arrest and fall restraint systems?
• What are the requirements for inspecting fall protection equipment?
• How often should safety harnesses and lanyards be inspected?
• What is the correct piece of equipment for my team?
• What is the best Rescue Equipment for my site?

Training and Competency

• What training is required for employees working at height?
• Can we get on-site work at height consultancy for complex or high-risk tasks?
• Do we need confined space and height rescue training?
• Is it possible to run certified training courses at our location?
• What duration or type of training fits my site best?

Work at Height Rescue Planning

• What steps should be taken in case of a fall from height?
• How do we ensure our rescue plans are site-specific and compliant?
• What equipment is essential for an effective rescue operation?
• How do we prevent suspension trauma after a fall arrest?

These questions are commonly raised by health and safety managers, site supervisors, and project leads alike seeking to ensure compliance and safety in work at height scenarios.

All valid questions and ones we work with sites on to answer all the time. These are the things that matter, and they’re exactly what we deal with every day at REAX.

How can REAX help with your work at height consultancy?

Practical Work at Height Support

We provide hands-on consultancy services across the UK for businesses that want to do work at height the right way. Whether it’s improving or developing rescue plans, carrying out detailed site inspections and audits, or making sure your Personal Protective Equipment (PPE / PFPE) is up to standard or even right for the job, our team’s here to support you with practical, industry-focused advice.

Site Audits and Risk Assessments

We carry out full safety audits on-site, helping you identify risks, assess current methods of access and egress, ensure your procedures are aligned with the latest LOLER and PUWER requirements. It’s not just a checklist. Our assessments are grounded in the specifics of what happens on your site and always consider the practicalities of the work task.

Rescue Planning and Emergency Procedures

No two sites are the same, and neither are the rescue plans. We develop tailored procedures, method statements and site-specific rescue plans for working at height and confined space rescue. These site-specific plans are built around your workplace, team size, and specific risks.

Personal Protective Equipment (PPE / PFPE), Access, and Rescue Equipment Provision

We help you make sense of work at height equipment. From harnesses and helmets to rope rescue kits, tripods, and stretchers, we advise on the right personal protective and rescue equipment for the job. We also support with sales, hire, inspections and routine checks, so you know your gear is ready when it’s needed. We will also NEVER oversell, if you don’t need anything we’ll tell you that too!

On-site Training and Certification

We can deliver training on your site (where better than the real thing!) no matter where you are in the country. We run courses in specialist areas such as work at height, rescue, rope access, power ascenders and confined spaces. It’s all tailored to your setup, so your team learns in the context of your environment.

Want to Talk It Through? Speak with a Work at Height expert today!

If you’ve been searching for a consultant who can help you with rescue plans, PPE inspections, risk assessments, or training, you’ve found the right place.

Get in touch with our team at REAX today to book at Work at Height Consultancy conversation. Let’s chat through your questions, pain points, current setup and how we can work together to make your site safer and compliant in the most effective way.

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