OptiMate 4 Dual Program 12V Motorcycle Automatic Battery Charger Optimiser

This is the third Optimate Battery Charger I have bought since 1999. The first is an Optimate II, (for a Honda Shadow which was part exchanged for a Harley Davidson), but I found that when keeping the HD Road King Classic battery charged over the winter months it just did not handle the extra Voltage/Current needed to keep the battery up. The second Optimate 3+ Charger was bought for my new HD FLSTC. For some reason, and I have tried several emails to Optimate, the output has sunk to 2Mv dc, so that was binned. I needed a more powerfull charger because of the bike alarm, which puts a drain on the battery when left over the winter period, so decided on a more upto date charger. So far so good. This Optimate 4 will keep my bike battery upto par. It is more than adequate for the job and charges at 0.8Adc at 12Vdc over 'Dual Programs' and will handle battery's at 12Vdc 3-50Ah (charge within 48 hours) and upto 70Ah long term maintenance. These 'Programs' can be changed by the instructions supplied. Supplied with the charger are a pair of direct connection to battery leads with the appropriate in line 15A fuse with a connector that only fits Optimate Chargers, 1 pair of Crocodile Clips with the same type of connector. The charger can be wall mounted with the supplied fixing screws if you wish. If this latest type of charger lasts as long as my first I will be happy, and if you want a decent well made battery charger you will be happy with 'Optimate'.

My old optimate gave up the ghost after 20 years of constant use , I though the new one was fake as it was so much lighter , converted my bike to the new leads and the charger is absolutely brilliant absolute must have for and biker

This item is brilliant.I own two cars, and one motorbike, so my bike can sometimes sit for weeks without getting used.I have the included battery connector permanently attached to my bike battery, so it really easy to connect the charger to the connector whenever needed.I actually have it connected permanently, when my bike is parked up - as my bike is a Ducati Multistrada 1200, which are notorious for being difficult to start.This item has never failed me, it's been in constant use for almost 3 years now (I'm doing this review, as I got a reminder that I hadn't done it nearly 3 years ago...lol).It also has a battery saver function, which was a life saver last weekend - as I'd moved my bike, and accidentally left it unplugged, so my battery was absolutely dead.I am part of the Royal British Legion Scottish Riders, and needed my bike for the Riders Remembrance Day Parade in Glasgow last Sunday (10th November 2024), so plugged it in and it automatically went to the battery saver function, which sorted me out no problem at all.A great product, and worth every penny... 🙂

I bought a replacement battery for my bike, but like an idiot I didn't even think about how I was going to charge it! The old one barely held a charge for 3 days and in winter when it needed a bit of extra cranking power it just died all the time.After reading lots of reviews and wanting to be kind to my new battery I bought this Optimate. I quickly flicked through the manual and noticed the recovery option so thought I would give it a go. As soon as I plugged it in the Optimate indicated that it was in recovery mode (automatically) so I left it overnight. Next day I came to it and the green LED for fully charged was lit! Needless to say I left the old battery in and it's working like a new one (it's 9 years old!).Unlike some others, I've had no trouble seeing what it's doing by a quick glance of the LEDs. Once you've looked at the chart in the manual a couple of times you will know what's going on in the future.The alligator clips to the battery are perfect. Very high quality, easy to get on and they stay in place. It's also nice to see another quality cable included that you can wire permanently to the battery so charging is just a case of plugging in! This is quite simply a magic box that will bring your battery back from the dead!

So I'm no expert and struggled for ages deciding on which Battery Charger to invest in. This was perfect in the end, both in terms of cost, usability and robustness. I used it to bring my 2016 Yamaha YZF R125 to life, after I left it to go completely flat for several months. This machine was able to diagnose and charge the battery back to normal. The equipment is pretty self-explanatory and if I can figure it out on my own, then I'm thinking anyone can. I would definitely recommend if you want a high quality piece of equipment, but without the technical headache. It's also well insulated and the wires are thicker and stronger than many others out there, making it a more sturdy option. It comes with the external charging leads and also the connectors that you can connect to the battery for long-term siting (I opted for this option). You can also mount it on a wall or something if you have a garage or something like that for storing your bike - it comes with the bracket and everything.