SMc Posted November 30, 2021 Posted November 30, 2021 Hi, I have a Risco alarm system which is hardwired. The battery backup has failed so I bought a new replacement battery 12V 7Ah Yuasa NP7-12L I took the front cover off and was surprised to find a 12V 3.4 Ah battery inside. Although the 12V 7Ah Yuasa will just about fit into the casing, the alarm connectors are too small for the battery terminals. This looked like a red flag to me so I wanted to ask some advice... Should I bin the bigger NP7 and re-purchase another 12V 3.4Ah battery ? Thanks SMc Quote
PeterJames Posted November 30, 2021 Posted November 30, 2021 Most people think a bigger battery is better, but the transformer is only 1amp so it cant charge a flat 7Ah battery. Plus how long are you planning on having power cuts for ? 8 hours 12 hours 24 hours? 3.4 will cope for around 12 hours on a 5 detector 1 bell 1 keypad system Quote
SMc Posted November 30, 2021 Author Posted November 30, 2021 Ok thanks Peter, so you advise that I should write off the NP7 and order the smaller one such as the existing flat powersonic PS-1230 if I can find one. I saw on Tayna they had a powersonic PG-12V5.4 with terminal types F1 F2 thanks SMc Quote
sixwheeledbeast Posted December 1, 2021 Posted December 1, 2021 The L model Yuasa's have larger faston connectors, this is to allow larger discharge currents for other applications that alarm kit wouldn't get near. If the panel is capable of charging this battery then a larger capacity battery would be fine. This should be checked before replacement anyway as part of a service. You could replace the faston connectors for larger ones and use the battery in that case, but the simplest option is like for like. Quote
SMc Posted December 1, 2021 Author Posted December 1, 2021 Like for like it is then...battery found and ordered from Amazon for delivery tomorrow... Thanks for your help. Quote
james.wilson Posted December 1, 2021 Posted December 1, 2021 I wouldn't get a power sonic one tho Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
SMc Posted December 1, 2021 Author Posted December 1, 2021 I have already ordered the thing... Well the one in there was the same and lasted around 4 years...which may well out last me...! Quote
sixwheeledbeast Posted December 1, 2021 Posted December 1, 2021 It likely won't make much difference if your not going to check the charging rate and voltages, stick it in an hope it lasts. Quote
SMc Posted December 2, 2021 Author Posted December 2, 2021 The Powersonic PS-1230 arrived and I popped it in. All is now working perfectly again... I will re-deploy the NP7 12V 7Ah Yuasa battery into my UPS which happens to take exactly those batteries... Thanks SMc Quote
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