If the charge level drops too low for an extended period (12.4 volts and below), permanent internal Standard starter batteries (sometimes referred to as calcium batteries, cranking batteries, lead-acid batteries, wet batteries). Standard leisure batteries (also referred to as auxiliary batteries, deep-cycling batteries, lead-acid batteries, wet batteries). Cost is the issue, they can typically be more than five times the price of a good quality lead-acid battery. Maintenance-free batteries regular monitoring and charging, especially when not in use for long periods. Yuasa, a top leisure battery brand,

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however that seems a lot of power, my transceiver does not use that much power. The other point is a 12 volt lead acid battery is normally over 12 volt, on charge up to 14.8 volt, it does depend on the radio, my IC290 would drop off on power output under 13.8 volt, but my FT290 worked the same 10.8 volt to 14.8 volt. The greater amount of lead in a genuine leisure battery and its more elaborate separators is reflected in its higher price and increased weight. Non-wet leisure batteries An AGM battery has lead plates in each cell and the manufacturer uses a machine to add highly compressed glass fibre into each compartment. The fibre then absorbs the acid electrolyte. During manufacture, air is also drawn from the casing and a pressure relief valve is fitted. These processes render the finished product more costly than a conventional ‘wet lead-acid’ leisure battery but AGM products can generally achieve many more recharging cycles – thereby achieving a longer working life. If the battery outputs less than 12v, it's unlikely to damage the device, but it might not work, right? OK, but is there a component that can input a voltage of 12v +-3 and output exactly 12v? Next, you fit a mover and a second, heavier, pair of leads appears. Space inside the battery box starts to get tight. You shorten the new leads to help, but now you have to disconnect the battery before you can lift it to the ground.

Types of conventional lead-acid batteries:

This gives your typical daily consumption. It is surprising how much power is required and how we take it for granted. Heavy consumption equipment like motor movers will have a detrimental effect on the battery performance for the reasons explained below. In contrast, a leisure battery has to provide a steady flow of current over a prolonged period and seldom gets replenished until the user recognises that its voltage level has substantially fallen. That’s when a re-charge is duly provided. If left long in a discharged state, a battery will generally not regain its former condition. Furthermore, manufacturers often recommend that re-charging is commenced when a battery drops to 50 per cent of its full condition. maintain your leisure battery will keep it going for as long as possible and can help reduce the cost of running Temperature– The stated capacity of a battery is expressed in Amp hours (Ah) but the quoted figure is only applicable when the ambient temperature is 25C. In reality, there are many occasions in the UK when it’s much colder than 25C and for every one degree drop in temperature, there’s an approximate one per cent reduction in a battery’s Ah capacity.

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I though the radio would just draw the power it needed, but maybe the battery amps exceeded the capacity? However, the second time I connected it up, it didn't work. The radio never worked again, so I replaced it. Or maybe a combination incorrect polarity and excessive current. i.e. Maybe the radio was protected against incorrect polarity but only up to the recommended 2.2 amps.complete, switch your smart charger off and wait at least five minutes to allow any gasses to clear Whereas a 12V battery is unlikely to cause electrocution, if the terminals or their couple cables are shorted-out, it can cause a fire. Let’s take an example. If a battery which is nominally rated at 60Ah is operating in temperatures of 15C, this ten degree reduction will bring about a 10 per cent reduction in its capacity. This now means that it effectively performs like a 54Ah battery. The temperature issue can have adverse effects for caravan and motorhome users who enjoy winter sports. Not only will a battery face greater demands when providing their lighting, fan-assisted heating, and evening TV entertainment during long, dark evenings; its effective capacity is significantly lower than it would be in warmer conditions. Lithium iron phosphate (LiFePO 4) batteries are another form of very deep cycle battery. They're self contained units with their own on-board charge manager. Having elminated lead they typically weigh half as much as an equivelant output lead-acid battery so the weight saving is a benefit. They can also be fully discharged and recharged and during the discharge cycle they can retain a stable voltage level and they can be rapidly recharged.

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Simple, easy to understand pricing, all prices include VAT and Delivery to mainland UK destinations The standard (i.e. ‘wet’) starter and leisure batteries described here usually have a polypropylene container (available in standardised sizes) and moulded with compartments.

Leisure batteries’ two-fold tasks

On the other hand, caravans only have leisure batteries, and these need to be charged to ensure your We found a convenient spot for the junction box on the floor near the battery box. Then it was just a case of cutting the old wires to length and connecting them to the junction box along with the new ones from Maplins.

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When inspecting battery cells, wear safety clothing including eye protection and gloves. Battery acid also damages clothing. However, by using an intelligent smart charger specific to the battery type and technology, you can Leisure batteries should be tested for both voltage and state of health regularly. On many vehicles, In consequence, it cannot cope with repeated heavy discharge and recharge cycles. Conversely, a standard ‘wet’ leisure battery doesn’t perform well as a starter battery either. Does the diode go between the fuse and the -ve battery terinal? So if that wire's connected to the +ve by mistake it's the first component in the firing line. Or it can go anywhere in the circuit?

Safety

Fullriver Battery was established in 1995 and has grown to become one of the World Leaders in sealed lead acid battery technology. Producing a wide range of AGM and Gel technology batteries, specialising in Deep Cycle, Industrial and specialty applications. We scoured the internet for a suitable junction box and found that Screwfix sells a five-way double pole unit rated at 100 amps and capable (in theory) of taking wires up to 25 sq mm. Tool Station has something very similar. The cost is around seven pounds. If you have recently disconnected a charger or have been driving a motorhome or towing, a reading will be higher than normal. After a battery has been receiving a charge, it is recommended to let it settle for at least four hours before taking a voltage reading. Category A is for higher storage capacity for people who frequently use their caravans or motorhomes away from electrical hook-ups As @winston1 , put a diode in the line, one of the 1N400x series will work (they cost about a penny each). And will reduce the voltage a bit, winner winner.